2x+14=30
2x =30-14
2x=16
x =8
Answer:
8
Step-by-step explanation:
Twice means 2 so twice a number,n, means 2 times n thus 2n
sum means add so, 2n + 14
"is" means equal so 2n + 14 = 30
Solve for n:
2n=16
N=8
1. at which location in new york state
would one least expect to find fossils in
the surface bedrock?
One would least expect to find fossils in the surface bedrock in the Adirondack Mountains region of New York State.
This region is known for having some of the oldest rocks in North America, dating back over a billion years. These rocks were formed through volcanic activity and mountain-building processes that occurred long before the evolution of complex life forms.
As a result, the rocks in the Adirondack Mountains are generally not rich in fossils, especially those of plants and animals that evolved much later in Earth's history.
In contrast, other regions of New York State, such as the Hudson Valley and the Finger Lakes region, have rocks that are more conducive to fossil preservation. These regions were covered by shallow seas at various times in the past, allowing for the accumulation of sediment and the preservation of fossils of marine organisms.
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The tangent plane to the surface with equation - in (9) +-3 at the point (z,y,z) - (2,1,9) has the equation ________.
The equation of the tangent plane to the surface with equation - in (9) +-3 at the point (2,1,9), first need to find the partial derivatives of the function with respect to x, y, and z. However, the surface equation provided seems to be incorrect or incomplete. Please provide the correct surface equation in the form f(x, y, z) = constant.
Let's call the function f(x, y, z) = - in (9) +-3.
∂f/∂x = 0 (since there is no x term in the function)
∂f/∂y = 0 (since there is no y term in the function)
∂f/∂z = -3/((z-9)^2)
Now we can use the formula for the equation of the tangent plane at a point (a,b,c) on a surface z=f(x,y):
z - f(a,b) = (∂f/∂x)(a,b)(x-a) + (∂f/∂y)(a,b)(y-b)
+ (∂f/∂z)(a,b)(z-c)
Plugging in the values we have, we get:
z - (- in (9) +-3)|_(2,1) = 0(x-2) + 0(y-1) - (3/((z-9)^2))|_(2,1,9)(z-9)
Simplifying:
z + in (9) - 3 = -3(z-9)
4z = 30
z = 7.5
So the equation of the tangent plane is:
z - (- in (9) +-3)|_(2,1) = (-3/((z-9)^2))|_(2,1,9)(z-9)
z - in (9) - 3 = -3(7.5-9)
z - in (9) - 3 = 4.5
z = 12.5
Therefore, the equation of the tangent plane to the surface with equation - in (9) +-3 at the point (2,1,9) is:
z - in (9) - 3 = -3/((z-9)^2)(z-9)
z - in (9) - 3 = -3(z-9)/(z-9)^2
z - in (9) - 3 = -3/(z-9)
z = 3/(z-9) + in (9) + 3
or
3x + 3y - 4z = -27 + in (9)
To find the equation of the tangent plane to the surface with equation ln(9) +- 3 at the point (x, y, z) = (2, 1, 9), follow these steps:
1. Determine the gradient vector of the given surface at the point (2, 1, 9).
2. Use the gradient vector as the normal vector of the tangent plane.
3. Write the equation of the tangent plane using the normal vector and the given point.
However, the surface equation provided seems to be incorrect or incomplete. Please provide the correct surface equation in the form f(x, y, z) = constant, so that I can help you find the equation of the tangent plane.
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Suppose C is any curve from (0,0,0) to (1,1,1) and F (x, y, z) = (1z + 5y) i + (1z + 5x)j + (1y + 1x)k. After confirming that F is conservative, compute a potential function f for F with constant term 0.
The potential function f(x, y, z) evaluated at the endpoints of C gives the same result:
f(1, 1, 1) - f(0, 0, 0) = (1 + 5 + 5 + 1/2 + 1/2) - 0 = 12
This confirms that f is indeed the potential function for F.
How to confirm that F is conservative?To confirm that F is conservative, we need to check if its curl is zero. The curl of F is given by:
[tex]curl(F) = (∂F_z/∂y - ∂F_y/∂z) i + (∂F_x/∂z - ∂F_z/∂x) j + (∂F_y/∂x - ∂F_x/∂y) k[/tex]Substituting F(x, y, z) = (1z + 5y) i + (1z + 5x)j + (1y + 1x)k into the above equation, we get:
curl(F) = 0i + 0j + 0k
The potential function f for F, we need to integrate F along any path from (0,0,0) to (1,1,1). Let C be the path given by the line segment connecting (0,0,0) and (1,1,1).
The parametric equations of C are:
x = ty = tz = twhere 0 ≤ t ≤ 1.
We need to evaluate the line integral ∫CF.dr, where r(t) = ti + tj + tk is the position vector of C at time t. The potential function f is defined as the line integral of F from (0,0,0) to (x,y,z), so we need to find an antiderivative of F to evaluate this integral.
The antiderivative of F is:
[tex]f(x, y, z) = z + 5xy + 5xz + (1/2)y^2 + (1/2)x^2 + C[/tex]where C is a constant of integration. We want f to have a constant term of 0, so we choose C = 0.
[tex]f(x, y, z) = z + 5xy + 5xz + (1/2)y^2 + (1/2)x^2[/tex]Now we can evaluate the line integral ∫CF.dr by substituting the parametric equations of C into F and taking the dot product with the differential of r(t):
[tex]F(r(t)).dr/dt = ((t+5t) i + (t+5t)j + (t+t)k) . (i+j+k) dt = (7t) dt[/tex]Integrating from t=0 to t=1, we get:
[tex]∫CF.dr = ∫0^1 7t dt = 7/2[/tex]Learn more about F is conservative
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The height, h, in feet of a ball suspended from a spring as a function of time, t, in seconds can be modeled by the equation h = negative 2 sine (pi (t one-half)) 5. which of the following equations can also model this situation? h = negative 2 cosine (pi t) 5 h = negative 2 cosine (pi (t one-half)) 5 h = 2 cosine (pi t) 5 h = 2 cosine (pi (t one-half)) 5
The correct answer for the equation is [tex]h = -2cos(\pi t) + 5[/tex] . The correct option is (1)
Given:
[tex]h= -2sin(\pi\tfrac{t}{2} )[/tex]
Examine the answer choices:
[tex]h = -2cos(\pi t) + 5[/tex]
Amplitude: |-2| = 2 (same as the given equation)
Frequency: π (same as the given equation)
Phase Shift: None (different from the given equation)
[tex]h = -2cos(\pi (t/2)) + 5[/tex]
Amplitude: |-2| = 2 (same as the given equation)
Frequency: π/2 (different from the given equation)
Phase Shift: None (different from the given equation)
[tex]h = 2cos(\pi t) + 5[/tex]
Amplitude: |2| = 2 (different from the given equation)
Frequency: π (same as the given equation)
Phase Shift: None (different from the given equation)
[tex]h = 2cos(\pi(t/2)) + 5[/tex]
Amplitude: |2| = 2 (different from the given equation)
Frequency: π/2 (different from the given equation)
Phase Shift: None (different from the given equation)
The correct equation is [tex]h = -2cos(\pi t) + 5[/tex] .The correct option is (1).
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What is the vertex and x-intercepts of -6x^2-50x+3085. 25
The vertex and x-intercepts of -6x^2-50x+3085. 25 are approximately -42.60 and 30.97.
To find the vertex and x-intercepts of the quadratic function -6x^2-50x+3085.25, we first need to express it in standard form -6x^2-50x+3085.25 = -6(x^2+8.33x-514.21)
So the x-intercepts are approximately -42.60 and 30.97.
We can complete the square to find the vertex of the parabola:
-6(x^2+8.33x-514.21) = -6[(x+4.165)^2-575.641]
-6(x^2+8.33x-514.21) = -6(x+4.165)^2+3453.844
So the vertex is at (-4.165, 575.844).
To find the x-intercepts, we can set y = 0 and solve for x:
-6x^2-50x+3085.25 = 0
Dividing both sides by -2.25 to simplify, we get:
2.6667x^2+22.2222x-1372.2222 = 0
Using the quadratic formula, we get:
x = (-22.2222 ± sqrt(22.2222^2-4(2.6667)(-1372.2222))) / (2(2.6667))
x = (-22.2222 ± sqrt(37511.1116)) / 5.3334
x = (-22.2222 ± 193.7262) / 5.3334
So the x-intercepts are approximately -42.60 and 30.97.
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x Which statement about prime and composite numbers is true?
x
A The product of any two prime numbers is a prime number.
* B The product of any two prime numbers is a composite number.
* C All prime numbers are odd numbers.
√x
D All even numbers are composite numbers.
The function R = 73. 3*/M3, known as Kielber's law, relates the basal metabolic rate R In Calories per day
burned and the body mass M of a mammal In kilograms.
a. Find the basal metabolic rate for a 180 kilogram lion. Then find the formula's prediction for a 80
kilogram human. If necessary round down to the nearest 50 Calories.
b. Use your metabolic rate result for the lion to find what the basal metabolic rate for a 80 kllogram
human would be if metabolic rate and mass were directly proportional. Compare the result to the result
from part a.
a. Kleiber's law for lion
Calories
Kleiber's law for humans
Calories
b. If metabolic rate and mass were directly proportional
Calories
If the metabolic rate were directly proportional to mass, then the rate for a human would be
(select)
than the actual prediction from Kleiber's law. Kleiber's law Indicates that smaller
organisms have a (select) v metabolic rate per kilogram of mass than do larger organisms.
The basal metabolic rate for a 180-kilogram lion is approximately 766.4 Calories per day.
The formula predicts that an 80-kilogram human would have a basal metabolic rate of approximately 1,313.9 Calories per day.
The basal metabolic rate is the amount of energy that an organism needs to carry out its basic physiological functions, such as breathing and circulating blood. In this case, Kielber's law is expressed as:
R = 73 [tex]\sqrt[4]{M^3}[/tex]
Let's use this function to find the basal metabolic rate for a 180-kilogram lion. To do this, we simply substitute M = 180 into the equation and solve for R:
R = 73 [tex]\sqrt[4]{180^3}[/tex]
R = 73 [tex]\sqrt[4]{5832}[/tex]
R ≈ 766.4
Now, let's find the formula's prediction for an 80-kilogram human. Again, we simply substitute M = 80 into the equation and solve for R:
R = 73[tex]\sqrt[4]{80^3}[/tex]
R = 73[tex]\sqrt[4]{512}[/tex]
R ≈ 1,313.9
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Complete Question:
The function R = 73 [tex]\sqrt[4]{M^3}[/tex], known as Kielber's law, relates the basal metabolic rate R In Calories per day burned and the body mass M of a mammal In kilograms.
Find the basal metabolic rate for a 180-kilogram lion. Then find the formula's prediction for an 80-kilogram human. If necessary round down to the nearest 50 Calories.
Write a polynomial function of least degree with integral coefficients that has the given zeros.
-5, -3-2i
Answer:
[tex]f(x)=x^3+11x^2+43x+65[/tex]
Step-by-step explanation:
If a polynomial function has a complex zero, then the conjugate of that complex zero is also a zero of the polynomial.
So, if (-3 - 2i) is a zero of the polynomial, then its conjugate (-3 + 2i) is also a zero of the polynomial.
Therefore, the three zeros of the polynomial function are:
-5(-3 - 2i)(-3 + 2i)The zero of a polynomial f(x) is the x-value when f(x) = 0.
According to the factor theorem, if f(a) = 0 then (x - a) is a factor of the polynomial f(x).
Therefore, the polynomial function in factored form is:
[tex]\begin{aligned}f(x) &= (x - (-5))(x-(-3-2i))(x-(-3+2i))\\&= (x +5)(x+3+2i)(x+3-2i)\end{aligned}[/tex]
Expand the brackets to write the polynomial in standard form.
[tex]\begin{aligned}f(x) &=(x +5)(x+3+2i)(x+3-2i)\\&=(x+5)(x^2+3x-2xi+3x+9-6i+2ix+6i-4i^2)\\&=(x+5)(x^2+6x+9-4i^2)\\&=(x+5)(x^2+6x+9-4(-1))\\&=(x+5)(x^2+6x+9+4)\\&=(x+5)(x^2+6x+13)\\&=x^3+6x^2+13x+5x^2+30x+65\\&=x^3+11x^2+43x+65\end{aligned}[/tex]
Therefore, the polynomial function of least degree with integral coefficients that has the given zeros -5 and (-3 - 2i) is:
[tex]f(x)=x^3+11x^2+43x+65[/tex]
f(x)=x3+11x²+43x+65
Nosaira solved an equation. her work is shown below: 3(2x 1 ) = 2(x 1) 1 6x 3 = 2x 2 1 6x 3 = 2x 3 4x = 0 x = 0 she determines the equation has no solution. which best describes nosaira’s work and answer? her work is correct, but there is one solution rather than no solution. her work is correct and her interpretation of the answer is correct. her work is incorrect. she distributed incorrectly. her work is incorrect. she moved terms across the equals sign incorrectly.
Nosaira's work is incorrect. Her mistake is in the step where she simplifies the expression 2x+1 on the left side of the equation by multiplying it with 3. She distributed the 3 only to the 2x term, but forgot to distribute it to the 1 term as well.
So, the correct expression on the left side should be 6x+3 instead of 6x+1. This mistake leads to the wrong equation 6x+3=2x^2-1, and when she tries to solve for x, she ends up with the equation 4x=0, which only has one solution, x=0.
Therefore, Nosaira's interpretation of the answer as having no solution is incorrect. The original equation actually does have a solution, which is x=1/2. If we correct the mistake in her work, we can see that the equation becomes [tex]6x+3=2x^2-1[/tex], which simplifies to [tex]2x^2-6x-4=0[/tex]. We can then factor out 2 to get [tex]x^2-3x-2=0[/tex], which can be factored further into (x-2)(x+1)=0. Therefore, the solutions are x=2 and x=-1, but we need to reject the negative solution as it does not satisfy the original equation.
In conclusion, Nosaira made a mistake in distributing the coefficient 3, which led to an incorrect equation and an incorrect interpretation of the answer. It is important to be careful and check our work, especially when dealing with algebraic expressions and equations.
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5. a space shuttle traveling at 17,581 miles per hour decreases its speed by 7,412 miles per hour. estimate the speed of the space shuttle after it has slowed down by rounding each number to the nearest hundred.
The rounding method used, the estimated speed of the space shuttle after it has slowed down is 10,200 miles per hour.
To estimate the speed of the space shuttle after it has slowed down, we round each number to the nearest hundred. The speed before the decrease is rounded to 17,600 miles per hour, and the decrease in speed is rounded to 7,400 miles per hour.
Next, we subtract the rounded decrease in speed from the rounded speed before. So, 17,600 - 7,400 = 10,200 miles per hour. This result represents the estimated speed of the space shuttle after it has slowed down.
Rounding to the nearest hundred is a way to approximate the values and make calculations simpler. However, it is important to note that rounding introduces some degree of error, and the actual speed after the decrease may differ slightly from the estimated value.
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When creating lines of best fit, do you believe that estimation by inspection of the equation is best or do you think it should be determined exactly? In what situations would it be best to use one over the other?
Your response should be 3-5 sentences long and show that you’ve thought about the topic/question at hand
In general, it is best to determine the equation of the line of best fit exactly rather than relying on estimation by inspection. This is because an exact equation allows for more precise predictions and calculations.
Estimation by inspection can be useful in situations where the data is relatively simple and a rough estimate is sufficient. However, in more complex datasets, it is important to use statistical methods to determine the line of best fit accurately.
It is also worth noting that in some cases, different methods of determining the line of best fit may be appropriate depending on the specific goals of the analysis.For example, in some cases, it may be more important to prioritize the accuracy of the slope of the line over the accuracy of the intercept. In such cases, certain methods, such as minimizing the sum of the squares of the vertical deviations, may be more appropriate than others.
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consider the following 8 numbers, where one labelled x is unknown. 26 , 7 , 17 , x , 21 , 6 , 34 , 27 given that the range of the numbers is 63, work out 2 values of x .
The two possible values of x are -29 and 69.
To find two possible values for x, we need to use the fact that the range of
the numbers is 63.
The range is defined as the difference between the largest and smallest
numbers in the set.
First, we can find the largest and smallest numbers in the set:
Smallest number = 6
Largest number = 34
Next, we can set up two equations to represent the range of the numbers,
using the two possible scenarios for x:
Scenario 1:
If x is the smallest number in the set, then the range is equal to [tex]34 - x.[/tex]
Scenario 2: If x is the largest number in the set, then the range is equal to
[tex]x - 6[/tex].
We can then set up two equations and solve for x in each scenario:
Scenario 1:
[tex]34 - x = 63x = 34 - 63x = -29[/tex]
Scenario 2:
[tex]x - 6 = 63x = 63 + 6x = 69[/tex]
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Apply the Distributive Property to the right side.
12
enter your response herex
enter your response here (Type integers or fractions.)
The rewritten expression of 12 using the distributive property is 3(2 + 2)
Rewriting the equation using the distributive property.From the question, we have the following parameters that can be used in our computation:
12 distributive property
This means that
12
Express as 6 + 6
So, we have
12 = 6 + 6
Factor out 3 from the equation
So, we have
12 = 3(2 + 2)
The above equation has been rewritten using the distributive property.
Hence, the rewritten expression using the distributive property is 3(2 + 2)
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Which answer gives the correct transformation of P(x) to get to I(x)?
A. ) I(x)=P(1/2x)
B. ) I(x)=P(2x)
C. ) I(x)=1/2P(x)
D. ) I(x)=2P(x)
The answer that gives the correct transformation of P(x) to get to I(x) is option D) I(x) = 2P(x).
This means that the function I(x) is obtained by multiplying the function P(x) by 2.
To understand why this is the correct transformation, let's consider an example:
Suppose P(x) represents the number of items produced by a factory in x hours. If we want to find the number of items produced by the factory in 2x hours, we can use the transformation I(x) = 2P(x). This is because the rate of production is constant, so in twice the time, the factory will produce twice the number of items. Therefore, multiplying the function P(x) by 2 gives us the function I(x) that represents the number of items produced by the factory in 2x hours.
Option A) I(x) = P(1/2x) means that we are compressing the function P(x) horizontally, which would result in a faster rate of change. This transformation does not make sense in the context of the problem and is not the correct transformation.
Option B) I(x) = P(2x) means that we are stretching the function P(x) horizontally, which would result in a slower rate of change. This transformation also does not make sense in the context of the problem and is not the correct transformation.
Option C) I(x) = 1/2P(x) means that we are reducing the function P(x) by half, which would result in a slower rate of change. This transformation does not match the problem statement and is not the correct transformation.
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F(x): (x+7)/(x+5) and g(x): 7x/(x^2-3x-40)
add the functions and show all steps
explain the steps to solve Rational Function
The value of the addition of the functions:
F(x) + g(x) = (8x² + 34x - 56)/(x²-3x-40).
To add the two rational functions F(x) and g(x), we first need to find a common denominator. In this case, the common denominator is (x+5)(x-8), since both denominators can be factored in this way.
F(x) needs to be multiplied by (x-8) on the top and bottom to get a common denominator of (x+5)(x-8), and g(x) needs to be multiplied by (x+5) on the top and bottom to get the same common denominator.
So, we have:
F(x) = (x+7)/(x+5) * (x-8)/(x-8) = (x² - x - 56)/(x² - 3x - 40)
g(x) = 7x/(x²-3x-40) * (x+5)/(x+5) = 7x(x+5)/(x+5)(x-8) = 7x(x+5)/(x²-3x-40)
Now that both functions have the same denominator, we can add them together:
F(x) + g(x) = (x² - x - 56)/(x² - 3x - 40) + 7x(x+5)/(x²-3x-40)
To simplify this expression, we need to combine the two fractions over the common denominator:
F(x) + g(x) = (x² - x - 56 + 7x² + 35x)/(x²-3x-40)
Combining like terms in the numerator:
F(x) + g(x) = (8x² + 34x - 56)/(x²-3x-40)
So, F(x) + g(x) = (8x² + 34x - 56)/(x²-3x-40).
To solve a rational function, we generally follow these steps:
Factor the numerator and denominator as much as possible.Determine any restrictions on the domain of the function (values of x that make the denominator equal to zero).Simplify the function by canceling any common factors.Write the function in lowest terms.Determine any asymptotes (vertical, horizontal, or slant) and intercepts.Graph the function.In the case of F(x) and g(x), we already simplified the sum of the functions. We can see that the denominator factors as (x+5)(x-8), which means that the function is undefined at x = -5 and x = 8. These are vertical asymptotes.
To find any horizontal asymptotes, we can use the fact that the degree of the numerator is greater than or equal to the degree of the denominator. This means that there is no horizontal asymptote; instead, the function approaches infinity as x approaches infinity or negative infinity.
Finally, we can graph the function using this information and any other relevant points, such as intercepts.
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Which equation correctly describes the relationship between x and y in the table?
A. y = 2x - 5
B. y = x
C. y = x - 3
D. y = 1/2x + 1
It's "D"
It's self explanatory but y gets 1/2 of whatever x is and adds 1. So if x = 2, then it'll get half of two (which is one) and add one to it, getting two.
What’s the answer? I need help please
Answer:
-√3/2
Step-by-step explanation:
sin(x) is equal to 1/2 when x=7π/6 or 11π/6
cos(7π/6) = -√3/2
cos(11π/6) = √3/2
In the question, it says that cos(x) is <0, which means that it has to be negative
So, the answer is -√3/2
Answer: C
Step-by-step explanation:
Think of a unit circle
sin x = -1/2 happens at 7[tex]\pi[/tex]/6 and 11[tex]\pi[/tex]/6, 3rd and 4th quadrant
Out of those 2 quadrants cos x is negative in the 3rd quadrant
So cos x= -√3/2
Lines ab and cd are parallel. if 6 measures (4x - 31)°, and 5 measures 95°, what is the value of x? a. x = 19 b. x = 95 c. x = 265 d. x = 29
Answer: x=29
Step-by-step explanation:
To find the value of x, we can set the two angles equal to each other and solve for x, which gives x = 19.
What will be the value of x if 6 measures (4x - 31)° and 5 measures 95° in parallel lines ab and cd?We can use the fact that alternate interior angles are congruent when a transversal intersects parallel lines. In this case, line ab and cd are parallel and 6 and 5 are alternate interior angles. So we can set up an equation:
4x - 31 = 95
Solving for x:
4x = 126
x = 31.5
So the value of x is not one of the answer choices given. However, if we round x to the nearest integer, we get x = 32, which is closest to answer choice (d) x = 29. Therefore, the closest answer choice is (d) x = 29.
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The number of enterprise instant messaging (IM) accounts is projected to grow according to the function N(t) = 2.97t2 + 11.32t + 59.2 (0 ≤ t ≤ 5) where N(t) is measured in millions and t in years, with t = 0 corresponding to 2006. (a) How many enterprise IM accounts were there in 2006? million (b) What was the expected number of enterprise IM accounts in 2009? million
There were 59.2 million enterprise IM accounts in 2006 and the expected number of enterprise IM accounts in 2009 was 119.89 million.
(a) To find the number of enterprise IM accounts in 2006, we need to evaluate
N(t) at t = 0: N(0) = 2.97(0)^2 + 11.32(0) + 59.2
N(0) = 0 + 0 + 59.2
N(0) = 59.2 million
So, there were 59.2 million enterprise IM accounts in 2006.
(b) To find the expected number of enterprise IM accounts in 2009, we need to evaluate
N(t) at t = 3 (since 2009 corresponds to t = 3): N(3) = 2.97(3)^2 + 11.32(3) + 59.2
N(3) = 2.97(9) + 33.96 + 59.2
N(3) = 26.73 + 33.96 + 59.2
N(3) = 119.89 million
So, the expected number of enterprise IM accounts in 2009 was 119.89 million.
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Lisa invested money into a bank account. The value of the account after t years can be found using the function f(t)=6320(1.054)t . What is the initial value of the account?
The initial value of the account is: 6320
How to solve compound interest problems?Compound interest is defined as the interest you earn on interest. This can be illustrated by using basic math: if you have $100 and it earns 10% interest each year, you'll have $110 at the end of the first year.
The general formula to find compound interest is:
A = P(1 + r/n)^t
where:
A is final amount
P is initial principal balance
r is interest rate
n is number of times interest applied per time period
t is number of time periods elapsed
We are given the equation as:
f(t) = 6320(1.054)^(t)
Thus, the initial value is 6320
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What is the multiplicity of the zero of the polynomial function that represents the volume of a sphere with radius x+5
The graph of the function will touch the x-axis at x = -5, but not cross it, and the behavior of the graph near x = -5 will be determined by the degree of the zero (which is 3 in this case).
The polynomial function that represents the volume of a sphere with radius x+5 is given by:
[tex]V(x) = (4/3)\pi (x+5)^3[/tex]
To find the multiplicity of the zero, we need to factor out the (x+5) term from the polynomial:
V(x) = (4/3)π(x+5)(x+5)(x+5)
We can see that the zero is x = -5, and it has a multiplicity of 3, since there are three factors of (x+5) in the polynomial.
This means that the graph of the function will touch the x-axis at x = -5, but not cross it, and the behavior of the graph near x = -5 will be determined by the degree of the zero (which is 3 in this case).
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At the toy store, 4 toy cars cost $3.24. How much does it cost to buy 25 toy cars?=
Answer:
Each car cost $0.81, you would need to do 0.81 times 25 and you would get $20.25
Step-by-step explanation:
Can someone help me asap? It’s due today!! Show work! I will give brainliest if it’s correct and has work
Make a probability table!
The probability of choosing randomly with replacement an H or P in either selection is derived to be equal to 0.16 which makes the last option correct.
What is probabilityThe probability of an event occurring is the fraction of the number of required outcome divided by the total number of possible outcomes.
The total possible outcome = 5
the event of selecting H = 1
probability of selecting H= 1/5
the event of selecting P = 2
probability of selecting H= 2/5
probability of choosing an H or P in either selection = 1/5 × 2/5 + 2/5 × 1/5
probability of choosing an H or P in either selection = 4/25
probability of choosing an H or P in either selection = 0.16
Therefore, the probability of choosing randomly with replacement an H or P in either selection is derived to be equal to 0.16
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Can u please help me solve this and explain how you got it please.
8xsquared-2-5x=8
Find the x
Using quadratic formula, the value of x in the quadratic equation are 1.47 and -0.85
What is the value of x?To find the value of x, we can either use quadratic formula or factorization method.
8x² - 2 - 5x = 8
Let's rewrite the equation properly
8x² - 5x - 2 - 8 = 0
8x² - 5x - 10 = 0
a = 8, b = -5, c = -10
Using quadratic formula;
-b ±[√b² - 4ac / 2a]
-(-5) ±[√(-5)² - 4(8)(-10) / 2(8)]
x = 5+ √345 / 16 or x = 5 - √345 / 16
x = 1.47 or x = -0.85
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Penelope invested $89,000 in an account paying an interest rate of 6}% compounded continuously. Samir invested $89,000 in an account paying an interest rate of 6⅜% compounded monthly. To the nearest hundredth of a year, how much longer would it take for Samir's money to double than for Penelupe's money to double?
To solve the problem, we need to find out how much longer it would take for Samir's money to double compared to Penelope's money, given that Penelope invested $89,000 in an account with a continuous interest rate of 6%, while Samir invested $89,000 in an account with a monthly compounded interest rate of 6⅜%.
For Penelope's investment, we can use the formula for continuous compounding, which is A = Pe^(rt), where A is the amount of money after t years, P is the initial investment, r is the interest rate as a decimal, and e is the natural logarithm base. We know that Penelope invested $89,000 and we want to find t such that A = 2P = $178,000. Thus, we have:
$178,000 = $89,000e^(0.06t)
Dividing both sides by $89,000 and taking the natural logarithm of both sides, we get:
ln(2) = 0.06t
Solving for t, we get:
t = ln(2)/0.06 ≈ 11.55 years
For Samir's investment, we can use the formula for monthly compounded interest, which is A = P(1 + r/12)^(12t), where A, P, r are the same as before, and t is the time in years divided by 12. Similarly, we know that Samir invested $89,000 and we want to find t such that A = 2P = $178,000. Thus, we have:
$178,000 = $89,000(1 + 0.0638/12)^(12t)
Dividing both sides by $89,000 and taking the logarithm (base 1 + r/12) of both sides, we get:
log(2)/log(1 + 0.0638/12) = 12t
Solving for t, we get:
t ≈ 11.80/12 = 0.98 years
To find the difference in time it takes for Samir's money to double compared to Penelope's, we subtract the time it takes for Penelope's money to double from the time it takes for Samir's money to double:
0.98 - 11.55 ≈ -10.57
However, this answer doesn't make sense in the context of the problem, since it's negative. After reviewing our solution, we realized that we made a mistake in the calculation of t for Penelope's investment. We need to find the time it takes for Penelope's investment to double with annual compounding, not continuous compounding. The formula for this is t = (ln(2))/(ln(1 + r)), where r is the annual interest rate as a decimal.
Plugging in the numbers, we get:
t = (ln(2))/(ln(1 + 0.06)) ≈ 11.55 years
This is the same as the time we got for Samir's investment, so the difference in time it takes for their money to double is:
0.98 - 11.55 ≈ -10.57
Again, this answer doesn't make sense in the context of the problem, since it's negative. Therefore, we need to revise our solution and approach the problem differently.
Which pair of lines in this figure are perpendicular?
A.
lines B and F
B.
lines F and D
C.
lines C and E
D.
lines A and D
Answer:
D. Lines A and D are perpendicular.
DAnswer:
Step-by-step explanation:
Let AX = B be a consistent linear system with 12 equations and 8 variables. If the solution of the system contains 3 free variables, then what is the rank of the coefficient matrix A?
The rank of the coefficient matrix A is 5.
How to determined the matrix?Since the system AX = B is consistent and has 12 equations and 8 variables, the rank of the coefficient matrix A must be less than or equal to 8 (the number of variables).
If the solution of the system contains 3 free variables, it means that the dimension of the null-space of A is 3. By the rank-nullity theorem,
we know that the dimension of the null-space of A plus the rank of A is equal to the number of columns of A (which is 8 in this case).
Therefore, we have:
rank(A) + dim(null(A)) = 8
rank(A) + 3 = 8
rank(A) = 5
So, the rank of the coefficient matrix A is 5.
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Solve for x trigonometry
Step-by-step explanation:
We are given an angle opposite of the side length x and the hypotenuse 10.
Use SOHCAHTOA, use Sin
[tex] \sin( \alpha ) = \frac{o}{h} [/tex]
We the angle is 20
and the hypotenuse is 10 and the opposite is x.
[tex] \sin(20) = \frac{x}{10} [/tex]
[tex]10 \sin(20) = x[/tex]
And we get
[tex]x = 3.42[/tex]
Ranjan is driving to Salt Lake City. His car gets 35. 5 miles per gallon of gasoline. Ranjan starts with his tank full. So far he has made two stops. Each time he stops, ranjan adds gas until his car is full again. At the first stop ranjan adds 6. 7 gallons of gas. At he second stop he adds 3. 4 gallons of gas. How many miles has ranjas drivin so far
After calculating the distance, Ranjan has driven 358.55 miles so far.
To solve this problem, we need to use the formula:
distance = fuel efficiency x fuel consumed
Let's start by calculating the total fuel consumed. At the first stop, Ranjan adds 6.7 gallons of gas, which means he consumed 6.7 gallons of gas since his tank was full at the beginning of the trip. At the second stop, he adds 3.4 gallons of gas, which means he consumed 3.4 gallons of gas between the first and second stops. Therefore, the total fuel consumed is:
6.7 + 3.4 = 10.1 gallons
Now we can calculate the distance driven using the fuel efficiency of 35.5 miles per gallon:
distance = 35.5 miles/gallon x 10.1 gallons = 358.55 miles
Therefore, Ranjan has driven 358.55 miles so far.
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HELP! WILL GIVE BRAINLEST! An angle of 1. 5 rad intercepts an arc on the unit circle. What is the length of the intercepted arc?
The length of the intercepted arc on the unit circle is equal to the radius of the circle times the angle in radians. In this case, since the unit circle has a radius of 1, the length of the intercepted arc is simply equal to the angle in radians.
So, the length of the intercepted arc for an angle of 1.5 radians is 1.5 units (since the angle is given in radians, not degrees).
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