Write the standard form of the equation of the circle with the given characteristics. Center: (−2,−7); Solution point: (2,−10)

Answers

Answer 1

The standard form of the equation of the circle with a center at (-2, -7) and a solution point at (2, -10) is (x + 2)^2 + (y + 7)^2 = 45.

To find the equation of a circle, we need the center and either the radius or a point on the circle.

Step 1: Determine the radius:

The radius can be found by calculating the distance between the center and the solution point using the distance formula:

radius = sqrt((x2 - x1)^2 + (y2 - y1)^2)

       = sqrt((2 - (-2))^2 + (-10 - (-7))^2)

       = sqrt(4^2 + (-3)^2)

       = sqrt(16 + 9)

       = sqrt(25)

       = 5

Step 2: Write the equation of the circle:

The equation of a circle with center (h, k) and radius r is given by:

(x - h)^2 + (y - k)^2 = r^2

Substituting the values from the given information:

(x + 2)^2 + (y + 7)^2 = 5^2

(x + 2)^2 + (y + 7)^2 = 25

Therefore, the standard form of the equation of the circle with the given characteristics is (x + 2)^2 + (y + 7)^2 = 25.

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Related Questions

The results of a repeated-measures anova are reported as follows, f(3,27) = 1.12, p > .05. how many treatment conditions were used in the study?

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Based on the information provided, the number of treatment conditions used in the study can be determined from the F-statistic. In the given results, the F-statistic is reported as f(3,27) = 1.12.

The numbers in parentheses after the f-value represent the degrees of freedom (df) for the numerator and denominator of the F-statistic, respectively. In this case, the numerator df is 3, and the denominator df is 27.

To calculate the number of treatment conditions, you subtract 1 from the numerator df. In this case, 3 - 1 = 2.

Therefore, the answer is that there were 2 treatment conditions used in the study.

The F-statistic in a repeated-measures ANOVA compares the variability between treatment conditions to the variability within treatment conditions. The numerator df represents the number of treatment conditions, while the denominator df represents the total number of participants minus the number of treatment conditions. Subtracting 1 from the numerator df gives the number of treatment conditions. In this case, the results indicate that there were 2 treatment conditions in the study.

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Starting from the point (1,0,−2) reparametrize the curve r(t)=(1+1t)1+(0−1t)j+(−2+0t)k in terms of arclerghth r(n)=i+j+k

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The reparametrized curve r(n) in terms of the arclength parameter is:

r(n) = (1 + (n - C₁) / √2)i - (n - C₁) / √2j - 2k

To reparametrize the curve defined by r(t) = (1 + t)i + (0 - t)j + (-2 + 0t)k in terms of arclength, we need to express t in terms of the arclength parameter n.

To find the arclength parameter, we integrate the magnitude of the derivative of r(t) with respect to t:

ds/dt = |dr/dt| = |(1)i + (-1)j + (0)k| = √(1^2 + (-1)^2 + 0^2) = √2

Now, we integrate ds/dt with respect to t to find the arclength parameter:

∫(ds/dt) dt = ∫√2 dt

Since ds/dt is a constant (√2), we can factor it out of the integral:

√2 ∫dt = √2t + C

Let's denote the constant of integration as C₁.

Now, we can solve for t in terms of the arclength parameter n:

√2t + C₁ = n

t = (n - C₁) / √2

Now, let's substitute this expression for t back into the original curve r(t) to obtain the reparametrized curve r(n):

r(n) = [(1 + (n - C₁) / √2)i] + [0 - (n - C₁) / √2]j + [-2 + 0(n - C₁) / √2]k

Simplifying further:

r(n) = [(1 + (n - C₁) / √2)i] + [-(n - C₁) / √2]j + [-2]k

Therefore, the reparametrized curve r(n) in terms of the arclength parameter is:

r(n) = (1 + (n - C₁) / √2)i - (n - C₁) / √2j - 2k

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a variable way to practice variables… variables are basically something that changes in the experiment. follow along in this activity and we will practice identifying variables….both ones that we do know about and ones that we might not see at first… a quick recap… use your notes to quickly define these three terms… hypothesis: independent variable: dependent variable: first, let’s make sure you know how to write a hypothesis: take a look at these questions one might ask and create a hypothesis. remember your formula! i wonder if the number of books i read will help me get smarter? hypothesis: i wonder what will happen to my plant if i leave it in the closet with no light? hypothesis: i wonder if exercising will help me get stronger? hypothesis: now, read the following hypotheses and identify the different variables. if you increase the number of hours of daylight a plant receives, then the plant will grow taller. independent : dependent: if you increase the amount of fish in the water, then you will increase the number of sharks in the area. independent : dependent: if you increase the amount of milk you drink, then you will increase the strength of your bones. independent : dependent: if you increase the number of hours you spend in practice, then you will increase the number of free throw shots you will make. independent : dependent: final practice in this section, you will read about two experiments. please write a hypothesis and identify the different variables. – independent and dependent. i am doing a test to see if there is a connection between how long you run and how fast your heart beats. i will be performing an experiment where a person will run for a 1 minute and i will check their heartbeat. then they will run for 2 minutes and i will check their heart rate. i will do this up to 6 minutes and see if there is a connection. what do you think my hypothesis should be? what are my variables? hypothesis: independent variable: dependent variable: the oc fair is right around the corner and your pig is on the plump side, tipping the scale at almost 300 pounds. you think, mrs. piggy needs to go on a diet to maintain a market ready weight of 280. to have her lose weight, you decide to place her on an all banana diet because you read on the internet it can take off 20 pounds in a week. you want to test this idea and see if it actually works. you plan to feed her a normal diet for the next week and keep track of her weight every morning. then, you plan to feed her nothing but bananas for a week and track her weight each morning. what do you think your hypothesis should be? what will the variables of your experiment be? hypothesis: independent variable: dependent variable:

Answers

In the first experiment, the hypothesis could be: If the duration of running increases, then the heart rate will increase.
The independent variable is the duration of running, and the dependent variable is the heart rate.

In the second experiment, the hypothesis could be: If the pig is fed only bananas for a week, then it will lose 20 pounds.
The independent variable is the diet (normal diet vs. all banana diet), and the dependent variable is the pig's weight.

Hypothesis: If the number of books I read increases, then I will get smarter.
Hypothesis: If I leave my plant in the closet with no light, then something will happen to it.
Hypothesis: If I exercise, then I will get stronger.

In the first hypothesis, the independent variable is the number of books read, and the dependent variable is getting smarter.
In the second hypothesis, the independent variable is leaving the plant in the closet with no light, and the dependent variable is the effect on the plant.
In the third hypothesis, the independent variable is exercising, and the dependent variable is getting stronger.

In the first experiment, the hypothesis could be: If the duration of running increases, then the heart rate will increase.
The independent variable is the duration of running, and the dependent variable is the heart rate.

In the second experiment, the hypothesis could be: If the pig is fed only bananas for a week, then it will lose 20 pounds.
The independent variable is the diet (normal diet vs. all banana diet), and the dependent variable is the pig's weight.

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determine the interval in which solutions are sure to exist. y^(4) y′′′ 2y=t

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The specific interval in which solutions are guaranteed to exist for the given differential equation cannot be determined without additional information such as initial conditions or boundary conditions.

To determine the interval in which solutions are sure to exist for the given differential equation y^(4) + y′′′ + 2y = t, we need to analyze the initial conditions or boundary conditions provided for the equation. The existence and uniqueness of solutions are typically guaranteed within certain intervals when appropriate conditions are met.

Since no initial conditions or boundary conditions are provided in the given equation, we cannot determine the specific interval in which solutions are sure to exist. The existence and uniqueness of solutions depend on the specific problem being addressed and the conditions imposed on the equation.

To ensure the existence of solutions, additional information such as initial values or boundary values needs to be provided. With proper initial or boundary conditions, solutions can be determined within the specified interval.

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d) Find the convolution of the following two finite duration sequence: h(n) = a"u(n) for all n x(n) = b"u(n) for all n i) When a # b When a = b [4] [4]

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When a ≠ b, the convolution of the finite duration sequences h(n) and x(n) is given by the summation of terms involving powers of a and b. When a = b, the convolution simplifies to (N + 1) * a^n, where N is the length of the sequence.

To find the convolution of the two finite duration sequences h(n) and x(n), we will use the formula for convolution:

y(n) = h(n) * x(n) = ∑[h(k) * x(n - k)]

where k is the index of summation.

i) When a ≠ b:

Let's substitute the values of h(n) and x(n) into the convolution formula:

y(n) = ∑[a^k * u(k) * b^(n - k) * u(n - k)]

Since both h(n) and x(n) are finite duration sequences, the summation will be over a limited range.

For a given value of n, the range of summation will be from k = 0 to k = min(n, N), where N is the length of the sequence.

Let's evaluate the convolution using this range:

y(n) = ∑[[tex]a^k * b^{(n - k)[/tex]] (for k = 0 to k = min(n, N))

Now, we can simplify the summation:

y(n) = [tex]a^0 * b^n + a^1 * b^{(n - 1)} + a^2 * b^{(n - 2)} + ... + a^N * b^{(n - N)[/tex]

ii) When a = b:

In this case, h(n) and x(n) become the same sequence:

h(n) = [tex]a^n[/tex] * u(n)

x(n) =[tex]a^n[/tex] * u(n)

Substituting these values into the convolution formula:

y(n) = ∑[tex][a^k * u(k) * a^{(n - k) }* u(n - k)[/tex]]

Simplifying the summation:

y(n) = ∑[a^k * a^(n - k)] (for k = 0 to k = min(n, N))

y(n) = [tex]a^0 * a^n + a^1 * a^{(n - 1)} + a^2 * a^{(n - 2)}+ ... + a^N * a^{(n - N)[/tex]

y(n) =[tex]a^n + a^n + a^n + ... + a^n[/tex]

y(n) = (N + 1) * a^n

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Final answer:

The convolution of two sequences involves flipping one sequence, sliding the flipped sequence over the other and at each position, multiplying corresponding elements and summing. If a ≠ b, this gives a new sequence, while if a=b, this becomes the auto-correlation of the sequence.

Explanation:

The convolution of two finite duration sequences, namely h(n) = a^n*u(n) and x(n) = b^n*u(n), can be evaluated using the convolution summation formula. This process involves multiplying the sequences element-wise and then summing the results.

i) When a ≠ b, the convolution can be calculated as:

Flip one sequenceSlide the flipped sequence over the other oneAt each position, multiply corresponding elements and sum

The results will be a new sequence representative of the combined effects of the two original sequences.

ii) When a = b, the convolution becomes the auto-correlation of the sequence against itself. The auto-correlation is generally greater than the convolution of two different sequences, assuming that the sequences aren't identical. The steps for calculation are the same, just the input sequences become identical.

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Construct the perpendicular bisectors of the other two sides of ΔM P Q . Construct the angle bisectors of the other two angles of ΔA B C . What do you notice about their intersections?

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The intersections of the perpendicular bisectors and angle bisectors of a triangle reveal the circumcenter and incenter, which play important roles in triangle geometry.

When constructing the perpendicular bisectors of the other two sides of triangle MPQ, and the angle bisectors of the other two angles of triangle ABC, you will notice that their intersections occur at the circumcenter and incenter of the respective triangles.

The perpendicular bisectors of the sides of triangle MPQ intersect at a point equidistant from the three vertices. This point is known as the circumcenter. The circumcenter is the center of the circle that circumscribes triangle MPQ.

Similarly, the angle bisectors of the angles of triangle ABC intersect at a point equidistant from the three sides. This point is called the incenter. The incenter is the center of the circle inscribed within triangle ABC.

The circumcenter and incenter have significant geometric properties. The circumcenter is equidistant from the vertices of the triangle, while the incenter is equidistant from the sides of the triangle. Additionally, the circumcenter is the intersection of the perpendicular bisectors, while the incenter is the intersection of the angle bisectors.

Overall, the intersections of the perpendicular bisectors and angle bisectors of a triangle reveal the circumcenter and incenter, which play important roles in triangle geometry.

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1.) calculate a 98onfidence interval for the mean weeklysptime. circle the bounds each interval.

Answers

To calculate a 98% confidence interval for the mean weekly spare time, we need two key pieces of information: the sample mean and the sample standard deviation.

With these values, we can determine the range within which we are 98% confident the true population mean falls.

The 98% confidence interval for the mean weekly spare time provides a range of values within which we are 98% confident the true population mean lies. By calculating this interval, we can estimate the precision of our sample mean and assess the potential variability in the population.

The confidence interval is constructed based on the sample mean and the standard deviation. First, the sample mean is calculated, which represents the average weekly spare time reported by the participants in the sample. Next, the sample standard deviation is determined, which quantifies the variability of the data points around the sample mean. With these two values in hand, the confidence interval is computed using a statistical formula that takes into account the sample size and the desired confidence level.

The lower and upper bounds of the interval represent the range within which we expect the true population mean to lie with a 98% probability. By using a higher confidence level, such as 98%, we are increasing the certainty of capturing the true population mean within the calculated interval, but the interval may be wider as a result.

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P(x) = b*(1 - x/5)
b = ?
What does the value of the constant (b) need to
be?

Answers

If P(x) is a probability density function, then the value of the constant b needs to be 2/3.

To determine the value of the constant (b), we need additional information or context regarding the function P(x).

If we know that P(x) is a probability density function, then b would be the normalization constant required to ensure that the total area under the curve equals 1. In this case, we would solve the following equation for b:

∫[0,5] b*(1 - x/5) dx = 1

Integrating the function with respect to x yields:

b*(x - x^2/10)|[0,5] = 1

b*(5 - 25/10) - 0 = 1

b*(3/2) = 1

b = 2/3

Therefore, if P(x) is a probability density function, then the value of the constant b needs to be 2/3.

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according to the central limit theorem, the mean of the sample means is: a. less than the population mean b. the same as the population mean c. more than the population mean

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The mean of the sample means is expected to be the same as the population mean. Thus, option (b) is correct.

According to the Central Limit Theorem (CLT), which is a fundamental concept in statistics, the mean of the sample means is expected to be the same as the population mean.

When we take multiple samples from a population and calculate their means, the average of these sample means should be very close to the population mean.

This is true even if the individual samples themselves do not perfectly represent the population. The CLT provides a powerful tool for making inferences about the population based on samples.

Therefore, the correct answer is b. the same as the population mean.

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Solve each equation for θ with 0 ≤ θ <2 π.

csc θ=-1

Answers

The solution to the given csc function is: θ = (3π/2), (7π/2). It is found using the concept of cosec function and unit circle.

csc θ=-1 can be solved by applying the concept of csc function and unit circle. We know that, csc function is the reciprocal of the sine function and is defined as csc θ = 1/sin θ.

The given equation is

csc θ=-1.

We are to solve it for θ with 0 ≤ θ < 2π.

Now, let us understand the concept of csc function.

A csc function is the reciprocal of the sine function.

It stands for cosecant and is defined as:

csc θ = 1/sin θ

Now, let us solve the equation using the above concept.

csc θ=-1

=> 1/sin θ = -1

=> sin θ = -1/1

=> sin θ = -1

We know that, sine function is negative in the third and fourth quadrants of the unit circle, which means,

θ = (3π/2) + 2πn,

where n is any integer, or

θ = (7π/2) + 2πn,

where n is any integer.

Both of these values fall within the given range of 0 ≤ θ < 2π.

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find the gradient of f(x,y)=4x ^6 y^ 4+5x^ 5y^ 5

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The gradient of the function[tex]f(x, y) = 4x^6y^4 + 5x^5y^5[/tex] is given by ∇f(x, y) = (∂f/∂x, ∂f/∂y) =[tex](24x^5y^4 + 25x^4y^5, 16x^6y^3 + 25x^5y^4).[/tex]

The gradient of a function represents the rate of change of the function with respect to its variables. In this case, we have a function with two variables, x and y. To find the gradient, we take the partial derivative of the function with respect to each variable.

For the given function, taking the partial derivative with respect to x gives us [tex]24x^5y^4 + 25x^4y^5[/tex], and taking the partial derivative with respect to y gives us [tex]16x^6y^3 + 25x^5y^4.[/tex] Therefore, the gradient of f(x, y) is (∂f/∂x, ∂f/∂y) = [tex](24x^5y^4 + 25x^4y^5, 16x^6y^3 + 25x^5y^4).[/tex]The gradient provides information about the direction and magnitude of the steepest increase of the function at any given point (x, y). The components of the gradient represent the rates of change of the function along the x and y directions, respectively.

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Write the expression as the logarithm of a single number or expression. Assume that all variables represent positive numbers. 3logx−5logy 3logx−5logy=...........

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In summary, the expression 3log(x) - 5log(y) can be simplified and expressed as log(x^3/y^5). This is achieved by applying the logarithmic property that states log(a) - log(b) = log(a/b).

To understand the explanation behind this simplification, we utilize the logarithmic property mentioned above. The given expression can be split into two separate logarithms: 3log(x) and 5log(y). By applying the property, we subtract the logarithms and obtain log(x^3) - log(y^5).

This form represents the logarithm of the ratio between x raised to the power of 3 and y raised to the power of 5. Therefore, the simplified expression is log(x^3/y^5), which provides a concise representation of the original expression.

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x = a^2 bc/2d 1. if a is tripled, what would happen to x? 2. if d is increased, what would happen to x? 3. if b is doubled, what would happen to x?

Answers

If a is tripled, x is multiplied by 9 and 2. If d is increased, x becomes smaller and 3. If b is doubled, x remains the same.

Let's analyze the given equation: x = a² bc/2d.
1. If a is tripled, what would happen to x.
To determine the effect of tripling a on x, substitute 3a in place of a in the equation. We get:
x = (3a)² bc/2d
  = 9a² bc/2d
Since a^2 is multiplied by 9, x would be multiplied by 9 as well.

2. If d is increased, what would happen to x.
To determine the effect of increasing d on x, substitute (d + k) in place of d in the equation, where k represents the increase. We get:
x = a² bc/2(d + k)
Since d is in the denominator, as d + k increases, the denominator becomes larger, causing x to become smaller.

3. If b is doubled, what would happen to x.
To determine the effect of doubling b on x, substitute 2b in place of b in the equation. We get:
x = a² (2b)c/2d
  = 2a² bc/2d
The 2 in the numerator cancels out with the 2 in the denominator, resulting in no change to x.

In summary:
1. If a is tripled, x is multiplied by 9.
2. If d is increased, x becomes smaller.
3. If b is doubled, x remains the same.

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item 23 tell whether 24:9 and 9:7 form a proportion.

Answers

A proportion is an equation of the form a/b = c/d where the cross-product of the first and last term equals the cross-product of the second and third term. The cross-product of a/b and c/d is the product of a and d, and the product of b and c.

Thus, if we multiply the numerator and denominator of one of the fractions by the denominator of the other fraction, we get an equivalent proportion.

For instance, to determine whether 24:9 and 9:7 form a proportion, we can cross-multiply:

24/9 = 2.67 and 9/7 = 1.29.2.67 does not equal 1.29, which means that 24:9 and 9:7 do not form a proportion.

Because cross-multiplying yields 64 and 63, respectively, rather than equal values, the two ratios do not have a common unit rate. Since the unit rates of a and c do not equal the unit rates of b and d, the ratios do not form a proportion.

Consequently, the answer is: No, 24:9 and 9:7 do not form a proportion.

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Find the statement \( P_{k}+1 \) for the given statement \( P_{k} \). \[ P_{k}=k^{2}(k+7)^{2} \] \[ P_{k+1}= \]

Answers

The expression [tex]P_{k+1}[/tex] for the given statement [tex]P_k = k^2(k+7)^2[/tex] is [tex]P_{k+1}=(k+1)^2 (k+8)^2[/tex].

To find the expression [tex]P_{k+1}[/tex] based on the given statement[tex]P_k =k^2(k+7) ^2[/tex], we substitute k+1 for k in the equation.

Starting with the given statement [tex]P_k =k^2 (k+7)^2[/tex], we substitute k+1 for k, which gives us:

[tex]P_{k+1} =(k+1)^2((k+1)+7)^2[/tex]

Simplifying further:

[tex]P_{k+1} =(k+1)^2(k+8)^2[/tex]

This expression represents [tex]P_{k+1}[/tex] in terms of (k+1), where k is the original variable.

Therefore, the statement [tex]P_{k+1}=(k+1)^2 (k+8)^2[/tex] is the result we were looking for.

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2. Find \( f_{x x}, f_{y y}, f_{y x} \) for \( f(x, y)=y^{5} e^{x} \)

Answers

For the function \( f(x, y) = y^5 e^x \), the second partial derivatives are \( f_{xx} = e^x \), \( f_{yy} = 20y^3 e^x \), and \( f_{yx} = f_{xy} = 5y^4 e^x \).

To find the second partial derivatives, we differentiate the function \( f(x, y) = y^5 e^x \) with respect to \( x \) and \( y \) twice.

First, we find \( f_x \) by differentiating \( f \) with respect to \( x \):

\( f_x = \frac{\partial}{\partial x} (y^5 e^x) = y^5 e^x \).

Next, we find \( f_{xx} \) by differentiating \( f_x \) with respect to \( x \):

\( f_{xx} = \frac{\partial}{\partial x} (y^5 e^x) = e^x \).

Then, we find \( f_y \) by differentiating \( f \) with respect to \( y \):

\( f_y = \frac{\partial}{\partial y} (y^5 e^x) = 5y^4 e^x \).

Finally, we find \( f_{yy} \) by differentiating \( f_y \) with respect to \( y \):

\( f_{yy} = \frac{\partial}{\partial y} (5y^4 e^x) = 20y^3 e^x \).

Note that \( f_{yx} \) is the same as \( f_{xy} \) because the mixed partial derivatives of \( f \) with respect to \( x \) and \( y \) are equal:

\( f_{yx} = f_{xy} = \frac{\partial}{\partial x} (5y^4 e^x) = 5y^4 e^x \).

Therefore, the second partial derivatives for \( f(x, y) = y^5 e^x \) are \( f_{xx} = e^x \), \( f_{yy} = 20y^3 e^x \), and \( f_{yx} = f_{xy} = 5y^4 e^x \).

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Given f(x)= x+2
−3

+1 and g(x)=2 −x
−4 1.1 Determine f(−3). 1.2 Determine x if g(x)=4. 1.3 Write down the asymptotes of f. 1.4 Write down the range of g. 1.5 Determine the coordinates of the x-and y-intercepts of f. 1.6 Determine the equation of the axis of symmetry of f which has a negative gradient. Leave your answer in the form y=mx+c. 1.7 Sketch the graphs of f and g on the same axes. Clearly show ALL the intercepts with the axes and the asymptotes.

Answers

The equation of the axis of symmetry for a quadratic function with a negative gradient can be found by finding the average of the x-intercepts. In this case, the only x-intercept of f is x = 6.

1.1 To determine f(-3), substitute x = -3 into the function f(x):

f(-3) = (-3) + 2 - 3^2 + 1

= -3 + 2 - 9 + 1

= -9

Therefore, f(-3) = -9.

1.2 To determine x if g(x) = 4, set g(x) equal to 4 and solve for x:

2 - x - 4 = 4

x - 2 = 4

x = 6

x = -6

Therefore, x = -6 when g(x) = 4.

1.3 The asymptotes of f are vertical asymptotes since there are no divisions in the function. Therefore, there are no asymptotes for f(x).

1.4 The range of g represents the set of all possible y-values that g can take. In this case, g(x) = 2 - x - 4. Since there are no restrictions on the value of x, the range of g is all real numbers. In interval notation, the range can be represented as (-∞, +∞).

1.5 The x-intercept of a function represents the point where the graph intersects the x-axis. To find the x-intercept of f, set f(x) = 0 and solve for x:

x + 2 - 3^x + 1 = 0

x + 2 - 9 + 1 = 0

x - 6 = 0

x = 6

Therefore, the x-intercept of f is x = 6.

To find the y-intercept of f, substitute x = 0 into the function:

f(0) = (0) + 2 - 3^0 + 1

= 0 + 2 - 1 + 1

= 2

Therefore, the y-intercept of f is y = 2, or in coordinates, (0, 2).

1.6 The equation of the axis of symmetry for a quadratic function with a negative gradient can be found by finding the average of the x-intercepts. In this case, the only x-intercept of f is x = 6. Thus, the axis of symmetry is x = 6.

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SENSE-MAKING Determine whether ΔM N O ≅ ΔQ R S . Explain.

M(2,5), N(5,2), O(1,1), Q(-4,4), R(-7,1), S(-3,0)

Answers

ΔM N O and ΔQ R S are congruent triangles because all three sides of ΔM N O are equal in length to the corresponding sides of ΔQ R S. Therefore, we can say that ΔM N O ≅ ΔQ R S.

To determine whether ΔM N O ≅ ΔQ R S, we need to compare the corresponding sides and angles of the two triangles.

Let's start by finding the lengths of the sides of each triangle. Using the distance formula, we can calculate the lengths as follows:

ΔM N O:
- Side MN: √[(5-2)^2 + (2-5)^2] = √[9 + 9] = √18
- Side NO: √[(1-5)^2 + (1-2)^2] = √[16 + 1] = √17
- Side MO: √[(1-2)^2 + (1-5)^2] = √[1 + 16] = √17

ΔQ R S:
- Side QR: √[(-7+4)^2 + (1-4)^2] = √[9 + 9] = √18
- Side RS: √[(-3+7)^2 + (0-1)^2] = √[16 + 1] = √17
- Side QS: √[(-3+4)^2 + (0-4)^2] = √[1 + 16] = √17

From the lengths of the sides, we can see that all three sides of ΔM N O are equal in length to the corresponding sides of ΔQ R S. Hence, we can say that ΔM N O ≅ ΔQ R S by the side-side-side (SSS) congruence criterion.

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Find dy/dx for the equation below. 8x 4 +6 squ. root of xy​ =8y 2

Answers

The derivative of the given equation with respect to x is (32x3 + 3√y) / (8y - 3xy(-1/2)).

The given equation is:8x4 + 6√xy = 8y2We are to find dy/dx.To solve this, we need to use implicit differentiation on both sides of the equation.

Using the chain rule, we have: (d/dx)(8x4) + (d/dx)(6√xy) = (d/dx)(8y2).

Simplifying the left-hand side by using the power rule and the chain rule, we get: 32x3 + 3√y + 6x(1/2) * y(-1/2) * (dy/dx) = 16y(dy/dx).

Simplifying the right-hand side, we get: (d/dx)(8y2) = 16y(dy/dx).

Simplifying both sides of the equation, we have:32x3 + 3√y + 3xy(-1/2) * (dy/dx) = 8y(dy/dx)32x3 + 3√y = (8y - 3xy(-1/2))(dy/dx)dy/dx = (32x3 + 3√y) / (8y - 3xy(-1/2))This is the main answer.

we can provide a brief explanation on the topic of implicit differentiation and provide a step-by-step solution. Implicit differentiation is a method used to find the derivative of a function that is not explicitly defined.

This is done by differentiating both sides of an equation with respect to x and then solving for the derivative. In this case, we used implicit differentiation to find dy/dx for the given equation.

We used the power rule and the chain rule to differentiate both sides and then simplified the equation to solve for dy/dx.

Finally, the conclusion is that the derivative of the given equation with respect to x is (32x3 + 3√y) / (8y - 3xy(-1/2)).

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Determine whether AB || CD. Justify your answer.

A C=8.4, B D=6.3, D E=4.5 , and C E=6

Answers

To determine whether AB || CD, we need to compare the corresponding ratios of sides. Using the ratio [tex](6 + AB - CD)/4.5.[/tex] we know that if AB is parallel to CD, then this ratio should be constant regardless of the value of EB.

To determine whether AB || CD, we need to compare the corresponding ratios of sides.

Given that [tex]C = 8.4, B = 6.3, D = 4.5[/tex], and [tex]CE = 6[/tex], we can use the concept of proportionality to determine if AB is parallel to CD.

First, we compare the ratios of the corresponding sides AB and CD.

The ratio AB/CD can be calculated as
[tex](CE + EB)/ED.[/tex]
Plugging in the given values, we have [tex](6 + EB)/4.5.[/tex]

Next, we can solve for EB by subtracting CE from both sides of the equation: [tex]EB = (AB - CD).[/tex]

Therefore, the ratio AB/CD becomes [tex](6 + AB - CD)/4.5.[/tex]

If AB is parallel to CD, then this ratio should be constant regardless of the value of EB.

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AB is not parallel to CD based on the calculation of their slopes.

To determine whether AB is parallel to CD, we can use the concept of slopes. If the slopes of AB and CD are equal, then the lines are parallel.

Let's find the slopes of AB and CD. The slope of a line can be calculated using the formula: slope = (change in y)/(change in x).

For AB, the coordinates of A and B are (8.4, 6.3) and (4.5, 6) respectively. The change in y is 6 - 6.3 = -0.3, and the change in x is 4.5 - 8.4 = -3.9. So the slope of AB is (-0.3)/(-3.9) = 0.0769.

For CD, the coordinates of C and D are (8.4, 6.3) and (6.3, 4.5) respectively. The change in y is 4.5 - 6.3 = -1.8, and the change in x is 6.3 - 8.4 = -2.1. So the slope of CD is (-1.8)/(-2.1) = 0.8571.

Since the slopes of AB and CD are not equal (0.0769 ≠ 0.8571), we can conclude that AB is not parallel to CD.

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One employee of a computer store is paid a base salary of $938 a month plus a 6% commission on all sales over $5,541 during the month. How much must the employee sell in one month to earn a total of $3,250 for the month?

Answers

To earn a total of $3,250 for the month, the employee must sell approximately $55,000 worth of products. This includes a base salary of $938 and a 6% commission on sales over $5,541. By solving the equation, we find that the total sales needed to achieve this earning is approximately $55,000.

To determine this, we can set up an equation based on the given information. Let's denote the total sales as S. The employee earns a 6% commission on sales over $5,541, so the commission earned can be calculated as 6% of (S - $5,541).

The total earnings for the month, including the base salary and commission, should equal $3,250. Therefore, we can write the equation as:

$938 + 0.06(S - $5,541) = $3,250

Now, we can solve this equation to find the value of S.

$938 + 0.06S - $332.46 = $3,250

Combining like terms, we have:

0.06S = $3,250 - $938 + $332.46
0.06S = $2,644.46

Dividing both sides by 0.06, we find:

S = $2,644.46 / 0.06
S = $44,074.33

Therefore, the employee must sell approximately $55,000 worth of products in one month to earn a total of $3,250.

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Determine whether each formula is explicit or recursive. Then find the first five terms of each sequence. an =2 an₋₁+3 , where a₁=3

Answers

The first five terms of the sequence are 3, 9, 21, 45, and 93.The formula given, an = 2an₋₁ + 3, is a recursive formula because it defines each term in terms of the previous term.

To find the first five terms of the sequence, we can use the recursive formula:
a₁ = 3
a₂ = 2a₁ + 3 = 2(3) + 3 = 9
a₃ = 2a₂ + 3 = 2(9) + 3 = 21
a₄ = 2a₃ + 3 = 2(21) + 3 = 45
a₅ = 2a₄ + 3 = 2(45) + 3 = 93

Therefore, the first five terms of the sequence are 3, 9, 21, 45, and 93.

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For the exponential function \( f(x)=a^{x}, a>0, a \neq 1 \), the domain is and the range is
\( y=2 x \) \( -4 x+y=-1 \)

Answers

The solution to the system of equations is x = 1\2 and y = 1.

The exponential function \(f(x) = a^x\), \(a > 0\), \(a \ne 1\) has a domain of all real numbers, and its range is positive numbers.

Note that an exponential function is a function of the form \(f(x)=a^{x}\), where a is a positive real number, other than 1 and \(x\) is any real number.

Let's solve the given system of equations:y=2x-4x+y=-1

To solve the system of equations, we can use the substitution method.

The substitution method can be described as follows:

Take one equation and use it to express one of the variables in terms of the other.

Substitute that expression into the other equation and solve for the remaining variable.

Substitute the value of the second variable back into one of the equations to find the value of the first variable.Let's use the first equation to substitute \(y\) in the second equation.

We have:\begin{aligned}-4x+y&=-1\\-4x+2x&=-1\\-2x&=-1\\x&=\frac{1}{2}\end{aligned}

Now, substitute \(x = \frac{1}{2}\) into the first equation to find the value of \(y\).

We have:\begin{aligned}y&=2x\\y&=2 \cdot \frac{1}{2}\\y&=1\end{aligned}

Thus, the solution to the system of equations is \(x = \frac{1}{2}\) and \(y = 1\).

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Find h′(0) if h(x)=g(f(x)),g(x)=x+1/x , and f(x)=e^x.

Answers

The value of h'(0) is 0. This means that at x = 0, the rate of change of the function h(x) is 0, indicating a horizontal tangent line at that point.

The derivative of h(x) with respect to x, denoted as h'(x), can be found using the chain rule. We are given that h(x) = g(f(x)), where g(x) = x + 1/x and f(x) = e^x. To find h'(0), we need to evaluate the derivative of h(x) at x = 0.

The first step is to find the derivative of g(x). Using the power rule and the quotient rule, we have [tex]g'(x) = 1 - 1/x^2.[/tex]

Next, we find the derivative of f(x). The derivative of e^x is simply e^x.

Now, applying the chain rule, we have h'(x) = g'(f(x)) * f'(x). Substituting the expressions we found earlier, we get [tex]h'(x) = (1 - 1/(e^x)^2) * e^x.[/tex]

To find h'(0), we substitute x = 0 into the expression for h'(x). This gives us [tex]h'(0) = (1 - 1/(e^0)^2) * e^0 = (1 - 1) * 1 = 0.[/tex]

Therefore, the value of h'(0) is 0. This means that at x = 0, the rate of change of the function h(x) is 0, indicating a horizontal tangent line at that point.

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Given the system of simultaneous equations: x−y−2z=−8
−4x+2y+2z=12
−3x−3z=−6

a. Use Gaussian elimination to determine the ranks of the coefficient matrix (A) and the augmented matrix (AB). Hence, comment on the consistency of the system and the nature of the solutions. b. Find the solution(s) if any.

Answers

a) The rank of the coefficient matrix A is also 2 because it has the same number of non-zero rows as AB.

b)  the system of equations is inconsistent, and there are no solutions that satisfy all three equations simultaneously.

a. To determine the ranks of the coefficient matrix (A) and the augmented matrix (AB) using Gaussian elimination:

The given system of equations can be written in matrix form as:

[A | B] =

[ 1 -1 -2 | -8 ]

[ -4 2 2 | 12 ]

[ -3 0 -3 | -6 ]

Performing Gaussian elimination on the augmented matrix (AB) to obtain its row-echelon form:

Step 1: Multiply the first row by 4 and add it to the second row:

[ 1 -1 -2 | -8 ]

[ 0 -2 -6 | 4 ]

Step 2: Multiply the first row by 3 and add it to the third row:

[ 1 -1 -2 | -8 ]

[ 0 -2 -6 | 4 ]

[ 0 -3 -9 | -30 ]

Step 3: Multiply the second row by -1/2:

[ 1 -1 -2 | -8 ]

[ 0 1 3 | -2 ]

[ 0 -3 -9 | -30 ]

Step 4: Multiply the second row by 3 and add it to the third row:

[ 1 -1 -2 | -8 ]

[ 0 1 3 | -2 ]

[ 0 0 0 | -36 ]

We now have the row-echelon form of the augmented matrix. The number of non-zero rows in the row-echelon form of AB is 2, which is also the rank of AB.

The rank of the coefficient matrix A is also 2 because it has the same number of non-zero rows as AB.

b. Comment on the consistency of the system and the nature of the solutions:

Since the rank of the coefficient matrix (A) is less than the number of variables (3), the system is inconsistent. Inconsistent systems do not have a solution that satisfies all equations simultaneously.

From the row-echelon form of the augmented matrix, we can observe that the last row consists of all zeros except for the last column, which is non-zero (-36). This implies that the equation 0x + 0y + 0z = -36 is inconsistent because it states that 0 = -36, which is not true.

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Please help asap
Use Cylindrical Coordinates to evaluate the mass of the solid enclosed by the paraboloids \( z=x^{2}+y^{2} \), and \( z=2-\left(x^{2}+y^{2}\right) \) if the density function is given by \( \delta(x, y

Answers

To evaluate the mass of the solid enclosed by the given paraboloids using cylindrical coordinates, we need to express the density function δ as a function of the cylindrical coordinates (ρ, φ, z).

In cylindrical coordinates, the paraboloids can be expressed as:

z = ρ^2 (from the equation z = x^2 + y^2)

z = 2 - ρ^2 (from the equation z = 2 - (x^2 + y^2))

To find the bounds for the variables in cylindrical coordinates, we need to determine the region of integration.

The first paraboloid, z = ρ^2, lies below the second paraboloid, z = 2 - ρ^2. We need to find the bounds for ρ and z.

Since both paraboloids are symmetric with respect to the z-axis, we can consider the region in the positive z-half space.

The intersection of the two paraboloids occurs when:

ρ^2 = 2 - ρ^2

2ρ^2 = 2

ρ^2 = 1

ρ = 1

So the region of integration lies within the circle ρ = 1 in the xy-plane.

For the bounds of z, we consider the height of the region, which is determined by the two paraboloids.

The lower bound is given by the equation z = ρ^2, and the upper bound is given by the equation z = 2 - ρ^2.

Therefore, the bounds for z are:

ρ^2 ≤ z ≤ 2 - ρ^2

Now, we need to express the density function δ as a function of the cylindrical coordinates (ρ, φ, z).

Since the density function is given by δ(x, y, z) = z, we can replace z with ρ^2 in cylindrical coordinates.

Therefore, the density function becomes:

δ(ρ, φ, z) = ρ^2

To evaluate the mass, we integrate the density function over the region of integration:

M = ∭δ(ρ, φ, z) dV

Using cylindrical coordinates, the volume element dV is given by ρ dρ dφ dz.

Therefore, the mass becomes:

M = ∭ρ^2 ρ dρ dφ dz

Integrating over the appropriate bounds:

M = ∫[φ=0 to 2π] ∫[ρ=0 to 1] ∫[z=ρ^2 to 2-ρ^2] ρ^2 dz dρ dφ

Evaluating this triple integral will give you the mass of the solid enclosed by the paraboloids.

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suppose that your stats teacher claims the amount of time children can look at a marshmallow before eating it is approximately normally distributed with a mean of 12.4 seconds and a standard deviation of 3 seconds. you decide to try the experiment on 10 random children and find they were able to resist eating the marshmallow for an average of 15 seconds. would you conclude that your teacher is probably correct by claiming an average of 12.4 seconds? why or why not?

Answers

Whether the teacher's claim that the average time children can resist eating a marshmallow is approximately 12.4 seconds is correct, we can conduct a hypothesis test.

We will set up the null and alternative hypotheses: Null hypothesis (H₀): The true population mean is 12.4 seconds.

Alternative hypothesis (H₁): The true population mean is not 12.4 seconds.

Next, we need to determine if the observed sample mean of 15 seconds provides strong evidence against the null hypothesis. To do this, we can perform a t-test using the given sample data.

Using the sample mean (15 seconds), the sample size (10 children), the population mean (12.4 seconds), and the standard deviation (3 seconds), we can calculate the t-value.

The t-value is calculated as (sample mean - population mean) / (standard deviation / sqrt(sample size)). Plugging in the values, we get:

t = (15 - 12.4) / (3 / sqrt(10)) ≈ 2.493

Next, we compare the calculated t-value to the critical value at the desired significance level (usually 0.05). If the calculated t-value is greater than the critical value, we reject the null hypothesis.

Since the given critical value is not provided, we cannot definitively determine whether the null hypothesis is rejected. However, if the calculated t-value exceeds the critical value, we would have evidence to suggest that the teacher's claim of an average of 12.4 seconds is not supported by the data.

In conclusion, without knowing the critical value, we cannot determine whether the teacher's claim is probably correct. Additional information regarding the critical value or the desired significance level is necessary for a definitive conclusion.

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Your company estimators have determined that the use of sonar sweeps to look for debris returns will cost $4000 for every cubic mile of water surveyed. If a plan calls for ten search zones, each having a rectangular area measuring 12.5 miles by 15.0 miles, and the average depth in the region is approximately 5500 feet, how much will it cost to sweep the entire planned region with sonar?

Answers

It will cost $12,000,000 to sweep the entire planned region with sonar.

To calculate the cost of sweeping the entire planned region with sonar, we need to determine the volume of water that needs to be surveyed and multiply it by the cost per cubic mile.

Calculate the volume of water in one search zone.

The area of each search zone is given as 12.5 miles by 15.0 miles. To convert this into cubic miles, we need to multiply it by the average depth of the region in miles. Since the average depth is approximately 5500 feet, we need to convert it to miles by dividing by 5280 (since there are 5280 feet in a mile).

Volume = Length × Width × Depth

Volume = 12.5 miles × 15.0 miles × (5500 feet / 5280 feet/mile)

Convert the volume to cubic miles.

Since the depth is given in feet, we divide the volume by 5280 to convert it to miles.

Volume = Volume / 5280

Calculate the total cost.

Multiply the volume of one search zone in cubic miles by the cost per cubic mile.

Total cost = Volume × Cost per cubic mile

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form a polynomial whose real zeros and degree are given. zeros: , 0, ; degree: 3 question content area bottom part 1 type a polynomial with integer coefficients and a leading coefficient of 1.

Answers

The polynomial with real zeros 0 and 1 and a degree of 3, with integer coefficients and a leading coefficient of 1, is: x^2 - x.

To form a polynomial with given real zeros and degree, we need to consider the fact that if a is a zero of the polynomial, then (x - a) is a factor of the polynomial. In this case, the zeros given are 0 and 1, and the degree of the polynomial is 3.

To form the polynomial, we can start by writing the factors corresponding to the zeros:

(x - 0) and (x - 1)

Now, we can multiply these factors together to obtain the polynomial:

(x - 0)(x - 1)

Expanding the expression:

x(x - 1)

Multiplying further:

x^2 - x

Since the degree of the polynomial is 3, we need to include another factor of (x - a) where "a" is another zero. However, since no other zero is given, we can assume it to be a general value and add it to the polynomial as follows:

(x^2 - x)(x - a)

This forms the polynomial of degree 3 with given real zeros and integer coefficients. Note that the leading coefficient is 1, which ensures that the polynomial has a leading coefficient of 1.

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can
some one help me with this qoustion
Let \( f(x)=8 x-2, g(x)=3 x-8 \), find the following: (1) \( (f+g)(x)= \) , and its domain is (2) \( (f-g)(x)= \) , and its domain is (3) \( (f g)(x)= \) , and its domain is (4) \( \left(\frac{f}{g}\r

Answers

The required functions are:(1) `(f+g)(x) = 11x - 10` and the domain is `(-∞, ∞)`(2) `(f-g)(x) = 5x + 6` and the domain is `(-∞, ∞)`(3) `(fg)(x) = 24x² - 64x + 16` and the domain is `(-∞, ∞)`(4) `(f/g)(x) = (8x - 2)/(3x - 8)` and the domain is `(-∞, 8/3) U (8/3, ∞)`

Given the functions, `f(x) = 8x - 2` and `g(x) = 3x - 8`. We are to find the following functions.

(1) `(f+g)(x)`(2) `(f-g)(x)`(3) `(fg)(x)`(4) `(f/g)(x)`

Let's evaluate each of them.(1) `(f+g)(x) = f(x) + g(x) = (8x - 2) + (3x - 8) = 11x - 10`The domain of `(f+g)(x)` will be the intersection of the domains of `f(x)` and `g(x)`.

Both the functions are defined for all real numbers, so the domain of `(f+g)(x)` is `(-∞, ∞)`.(2) `(f-g)(x) = f(x) - g(x) = (8x - 2) - (3x - 8) = 5x + 6`The domain of `(f-g)(x)` will be the intersection of the domains of `f(x)` and `g(x)`.

Both the functions are defined for all real numbers, so the domain of `(f-g)(x)` is `(-∞, ∞)`.(3) `(fg)(x) = f(x)g(x) = (8x - 2)(3x - 8) = 24x² - 64x + 16`The domain of `(fg)(x)` will be the intersection of the domains of `f(x)` and `g(x)`. Both the functions are defined for all real numbers, so the domain of `(fg)(x)` is `(-∞, ∞)`.(4) `(f/g)(x) = f(x)/g(x) = (8x - 2)/(3x - 8)`The domain of `(f/g)(x)` will be the intersection of the domains of `f(x)` and `g(x)`. But the function `g(x)` is equal to `0` at `x = 8/3`.

Therefore, the domain of `(f/g)(x)` will be all real numbers except `8/3`. So, the domain of `(f/g)(x)` is `(-∞, 8/3) U (8/3, ∞)`

Thus, the required functions are:(1) `(f+g)(x) = 11x - 10` and the domain is `(-∞, ∞)`(2) `(f-g)(x) = 5x + 6` and the domain is `(-∞, ∞)`(3) `(fg)(x) = 24x² - 64x + 16` and the domain is `(-∞, ∞)`(4) `(f/g)(x) = (8x - 2)/(3x - 8)` and the domain is `(-∞, 8/3) U (8/3, ∞)`

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Question 3 options: By measuring the mean absorbance of DCPIP By measuring the mean reduction of DCPIP By measuring the change in optical density (OD) of DCPIP at 590 nm By measuring the amount of light emitted from isolated chloroplasts you are the nurse that will be caring for mr. charles peterson. josie morgan is the nurse handing off the patient to you. what information josie provided was objective? 7. Before removing the brain from the skull, youre able to see two of the 12 cranialnerves. List the two nerves you identified and describe their function.8. Another name for the cerebrum is ________________________.79. Describe the appearance of the cerebrum10. Anatomically, where is the cerebellum in relation to the cerebrum?11. Describe the appearance of the cerebellum.12. Define infundibulum.13. Describe the appearance of the oculomotor nerves and give their function.14. Internally, the cerebellum contains a branching structure called the______________ ______________, commonly called the "tree of life."15. What is the corpus collosum?16. What is the function of the pineal body? hw 6 1 before you begin, verify if this system will converge for gauss-seidel method. if yes, explain why you think so. if not, rearrange to take the system to a form so that convergence is assured. system: 10cc1 2cc2 cc3 Step three: research schools. there might be many schools that offer the degree you want, but which one is best for you? list and explain five criteria that are important for you when choosing a specific school. examples include, but are not limited to, cost, on-campus housing, small or large student population, extracurricular activities, sports, and proximity to family (that is, a school that is in your city or state, or out of state). (5 points) A rectangular tile, 13 inches by 18 inches, can be converted into square meters by which of the following conversion setups? (13 in. 18 in.) (1in./2.54 cm) 2(100 m/1 cm) 2(13 in. 18 in.) (2.54 cm/1 in.) (100 m/100 cm) (13 in. x18 in. )(2.54 cm/1 in. ) 2(1 m/100 cm) 2. (13 in. 18 in.) (1in/2.54 cm)(1 m/100 cm) 2(13in.18in.)(2.54 cm/1in.) 2(1 m/100 cm) 21. Glutamate has THREE ionizable groups which have the following pKa values: - pKa (-COOH) = 2.19 ; - pKa (-NH3+) = 9.67 ; -pKa (-R) = 4.25. (b) Glutamate By filling the table below, differentiate between the hydrogen bond (H bond) involved in the structures below: (6%) point) if 1/x 1/y=5 and y(5)=524, (meaning that when x=5, y=524 ), find y(5) by implicit differentiation. A disk whose rotational inertia is 450 kg mhangs from a wire whose tousion constant is 2300 Nimrad. When its angular displacement is 0.21 rad, what is its angular acceleration in A) 243 B) 1.07 C) 483 D) 0.03 E) 0.041