Find the tangent of ∠E.

Answer:

C

Step-by-step explanation:

The y-intercept is approximately 191.1. The correct option is (B).

To compute the y-intercept, we need to use the equation of the regression line, which is:

y = a + bx

where a is the y-intercept, b is the slope, x is the independent variable (in this case, x-bar), and y is the dependent variable (in this case, y-bar).

The formula for the slope of the regression line is:

b = r * (sy/sx)

where r is the correlation coefficient, sx is the standard deviation of x, and sy is the standard deviation of y.

Substituting the given values, we get:

b = 0.341 * (37/12) = 1.05025

Now, we can use the formula for the y-intercept:

a = y-bar - b * x-bar

Substituting the given values, we get:

a = 251 - 1.05025 * 57 = 191.10925

Therefore, the y-intercept is approximately 191.1.

The answer is B) 191.1.

To know more about intercepts refer here :

https://brainly.com/question/14180189#

#SPJ11

The coordinates of point A are A(-1, 3l) and the coordinates of point B are B(k, 3), where k = 3l - (3/2).

To determine the coordinates of points A (-1, 3l) and B (k, 3) that lie on a line parallel to the line with the equation 2y + 3x = 9, we need to find the value of k for point B.

Given that the lines are parallel, they have the same slope. The equation 2y + 3x = 9 can be rewritten in slope-intercept form as y = -(3/2)x + 9/2, where the coefficient of x (-3/2) represents the slope of the line.

Since the lines are parallel, the slope of the line passing through points A and B should also be -3/2. Now we can find the value of k by substituting the coordinates of point A into the equation.

3l = -(3/2)(-1) + b

3l = (3/2) + b

3l - (3/2) = b

b = 3l - (3/2)

Know more about coordinates here:

https://brainly.com/question/16634867

#SPJ11

Answer:

18. $4.50

19. $18

Step-by-step explanation:

18.

The discount is 15%.

The original price is $30.

The discount is 15% of $30.

To find a percent of a number, multiply the percent by the number. Change the percent to a decimal by dividing the percent by 100.

15% of $30 = 15% × $30 = 0.15 × $30 = $4.50

19.

The discount is 25%.

The original price is $24.

The discount is 25% of $24.

To find a percent of a number, multiply the percent by the number. Change the percent to a decimal by dividing the percent by 100.

25% of $24 = 25% × $24 = 0.25 × $24 = $6

The discount is $6.

Now we subtract the amount of the discount, $6, from the original price.

$24 - $6 = $18

Answer: $18

The solution to the initial value problem is x(t) = 4/27 sin(3t).

We have solved the initial value problem x" + 9x = 12 sin(3t), x(0) = x'(0) = 0 and graphed the solution to confirm the phenomenon of pure resonance.

First, we need to solve the differential equation x" + 9x = 12 sin(3t) using standard techniques from differential equations. We can begin by assuming a solution of the form x(t) = A sin(3t) + B cos(3t), where A and B are constants to be determined. Taking the first and second derivatives of x(t), we find

=> x'(t) = 3A cos(3t) - 3B sin(3t) and x''(t) = -9A sin(3t) - 9B cos(3t).

Substituting these expressions into the differential equation, we obtain

=> -9A sin(3t) - 9B cos(3t) + 9A sin(3t) + 9B cos(3t) = 12 sin(3t).

Simplifying, we get 0 = 12 sin(3t), which implies that sin(3t) = 0.

This has solutions at t = 0, pi/3, 2pi/3, pi, etc.

These are the resonant frequencies of the system, where the external force is in phase with the natural frequency of the system.

To find the constants A and B, we can use the initial conditions x(0) = 0 and x'(0) = 0. Substituting t = 0 into the expressions for x(t) and x'(t), we get A = 0 and B = 0.

Therefore, the solution to the initial value problem is x(t) = 4/27 sin(3t).

Now let's graph the solution to confirm the phenomenon of pure resonance. We can use a graphing calculator or software to plot the function x(t) = 4/27 sin(3t) over a suitable range of t. We can also graph the external force 12 sin(3t) to see how it compares to the motion of the system.

To know more about graph here

https://brainly.com/question/17267403

#SPJ4

To find the point on the plane nearest to the origin, we need to minimize the distance between the origin and any point on the plane. We can use the formula for the distance between a point and a plane. The point on the plane nearest to the origin is (2, 12, 2).

distance = |ax + by + cz + d| / sqrt(a^2 + b^2 + c^2)

where (x, y, z) is any point on the plane, and a, b, c, and d are the coefficients of the plane equation.

In our case, the plane equation is 4x - y + 4z = 40, so a = 4, b = -1, c = 4, and d = -40. The distance between the origin and any point on the plane is:

distance = |4x - y + 4z - 40| / sqrt(4^2 + (-1)^2 + 4^2)

We want to minimize this distance, so we need to find the point on the plane that makes the distance as small as possible. To do this, we can use Lagrange multipliers:

Let f(x, y, z) = (x^2 + y^2 + z^2) be the function we want to minimize subject to the constraint 4x - y + 4z = 40. We can write this as:

grad(f) = λ grad(g)

where grad(f) = <2x, 2y, 2z> and grad(g) = <4, -1, 4>. Solving for x, y, z, and λ, we get:

x = 2, y = 12, z = 2, λ = 8 / sqrt(33)

Therefore, the point on the plane nearest to the origin is (2, 12, 2).

To find the point on the plane 4x - y + 4z = 40 nearest to the origin, we can use the formula for the distance between a point and a plane: D = |Ax + By + Cz + D| / √(A² + B² + C²).

In this case, A = 4, B = -1, C = 4, and D = -40. Let's plug in the origin (0, 0, 0) for (x, y, z):

D = |(4*0) - (1*0) + (4*0) - 40| / √(4² + (-1)² + 4²)
D = |-40| / √(16 + 1 + 16)
D = 40 / √33

Now, we use the normal vector (4, -1, 4) and multiply it by the distance D to find the nearest point (x, y, z):

x = (4 * 40) / √33
y = (-1 * 40) / √33
z = (4 * 40) / √33

The nearest point (x, y, z) on the plane 4x - y + 4z = 40 to the origin is approximately (4.94, -1.24, 4.94).

Learn more about Lagrange multipliers at: brainly.com/question/31827103

#SPJ11

The down payment is $43,200 on the house.

The 20% down payment on a $216,000 house is:

20% x $216,000

Let us convert the 20% to decimal value

To do this we have to divide 20 by 100

20/100=0.2

To find down payment multiply 0.2 with  $216,000

0.2×216,000

= $43,200

Therefore, the down payment is $43,200 on the house.

To learn more on Percentage click:

https://brainly.com/question/24159063

#SPJ1

Rounding to two decimal places, the minimum acceptable weight of a box of cookies is 15.42 ounces.

weight of the boxes of cookies follows a normal distribution with a mean of 16 ounces and a standard deviation of 0.25 ounces.

To find the minimum acceptable weight of a box of cookies, we need to find the value that corresponds to the 1st percentile of the normal distribution.

Using a standard normal distribution table or calculator, we find that the z-score corresponding to the 1st percentile is approximately -2.33.

We can use the formula z = (x - μ) / σ, where x is the minimum acceptable weight, μ is the mean, and σ is the standard deviation, to solve for x.

Plugging in the values, we get:

-2.33 = (x - 16) / 0.25

Solving for x, we get:

x = -2.33 * 0.25 + 16 = 15.4175

Rounding to two decimal places, the minimum acceptable weight of a box of cookies is 15.42 ounces.

to  learn  more about deviation click here:brainly.com/question/31835352

#SPJ11

The value of the integral is,

⇒ (81/2) π - (1/10) π* (18 √(3) - 22).

We have a triple integral in cylindrical coordinates, with the limits of integration:

0 ≤ θ ≤ 2π (since θ is not present in the integrand)

0 ≤ x ≤ 3 0 ≤ z ≤ √(9 - x²)

0 ≤ y ≤ √(9 - x² - z²)

Converting the integrand to cylindrical coordinates, we have:

[tex]1(x^{2} + y^{2} + z^{2} )^{1/2} = r[/tex]

So the integral becomes:

∫(0 to 2π) ∫(0 to 3) ∫(0 to √(9 - x²)) ∫(0 to √(9 - x² - z²)) r dy dz dx

We can evaluate the innermost integral with respect to y:

∫(0 to √(9 - x² - z²)) r dy = r √(9 - x² - z²)

Then we can integrate with respect to z:

∫(0 to √(9 - x²)) r √(9 - x² - z²) dz = (1/2) πr (9 - x²)

Finally, we can integrate with respect to x:

∫(0 to 3) (1/2) πr (9 - x²) dx = (27/2) π∫(0 to 3) r dx - (1/2) π∫(0 to 3) r * x²dx

The first integral is simply the volume of a cylinder of height 3 and radius 3, which is (27/2) π3² = (81/2)π.

For the second integral, we can convert back to Cartesian coordinates and use the substitution u = 9 - x² - z²:

∫(0 to 3) r x² dx = ∫(0 to 9) √(u) (9 - u) du = (2/5) [tex]u^{5/2}[/tex] - (1/3) [tex]u^{3/2}[/tex]] 0 to 9

= [tex]\frac{2}{5} 9^{5/2} - \frac{1}{3} 9^{3/2}[/tex]

Substituting this result back into the original integral, we have:

(27/2) π3 - (1/2) pi [ [tex]\frac{2}{5} 9^{5/2} - \frac{1}{3} 9^{3/2}[/tex]] = (81/2) pi - (1/10) π(18 √(3) - 22)

So, the value of the integral is,

⇒ (81/2) π - (1/10) π* (18 √(3) - 22).

To learn more about integration visit :

brainly.com/question/18125359

#SPJ12

The slope for the relationship between the number of minutes, x, and the amount charged, y is $1.5

Given that at Beans-and-Donuts Coffee shop, they display their internet fees on a chart

We have to find the slope for the relationship between the number of minutes, x, and the amount charged, y.

Slope = $4.49-$2.99/2-1

Slope=$1.5

Hence, the slope for the relationship between the number of minutes, x, and the amount charged, y is $1.5

To learn more on slope of line click:

https://brainly.com/question/16180119

#SPJ1

The value of an excel formula that will square this number is,

⇒ N²

We have to given that;

A number is stored in cell a1.

Hence, We can formulate;

Type = N² into the empty cell, in which N is a cell reference that contains the numeric value you want to square.

And, We also get;

To display the square of the value in cell A1 into cell B1,

We can type = A1² into cell B1.

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ1

The single biggest factor accounting for how people decide to vote is difficult to pinpoint with certainty as it can vary depending on the individual and the specific election.

The single biggest factor accounting for how people decide to vote is often considered to be their "party identification." Party identification refers to the political party that an individual feels a strong affiliation with, and it plays a significant role in shaping their voting choices.

People typically vote for candidates from the party they identify with, as they believe that party best represents their values and interests.

However, research suggests that factors such as political party affiliation, candidate's perceived competence and charisma, their stance on important issues, and their past track record can all play a significant role in how people decide to vote.

                              Additionally, external factors such as media coverage and political advertisements can also influence voter decisions. Ultimately, the decision to vote is complex and multifaceted, and can be influenced by a variety of factors.

Learn more about specific election

brainly.com/question/2999750

#SPJ11

Your selections are correct.

The coefficients of the x terms are opposites, so x will be eliminated when we add these two equations for both examples.

The equation of height of each pyramid inside the cube is,

⇒ h = 2V / B

The equation that represent the volume of each pyramid is,

⇒ V = LWH / 3

The equation that represent the volume of each pyramid if the height of each pyramid is h and area of the base is B,

⇒ V = 1/3 (B × h)

Given that;

To find the formula for height and volume of pyramid.

Now, We know that;

The equation of height of each pyramid inside the cube is,

⇒ h = 2V / B

And, The equation that represent the volume of each pyramid is,

⇒ V = LWH / 3

And, The equation that represent the volume of each pyramid if the height of each pyramid is h and area of the base is B,

⇒ V = 1/3 (B × h)

Learn more about the multiplication visit:

https://brainly.com/question/10873737

#SPJ1

The solution to the expressions using laws of exponents are:

a) 625x⁴

b) a²²

c) m²¹m⁹

d) ¹/₂b²c⁻⁶

e) (m/n)²¹

Some of the laws of exponents are:

- When we multiply same bases, we retain the base the same and then add the exponents.

- When we raise a base with a power to another power, we keep the base the same and then multiply the exponents.

- When we divide same bases, we keep the base the same and subtract the denominator exponent from the numerator exponent.

a) (5x)⁴ = 5⁴x⁴

= 625x⁴

b) a³ * a¹⁷ * a²

= a³⁺¹⁷⁺²

= a²²

c) (m⁷/m⁻³)³

= m⁷*³m³*³

= m²¹m⁹

d) a⁰b⁷c⁻³/(2b⁵c³)

= ¹/₂b⁷⁻⁵c⁻³⁻³

= ¹/₂b²c⁻⁶

e) (m/n)¹² ÷ (n/m)⁻⁹

= (m/n)¹² * (m/n)⁹

= (m¹²/n¹²) * (m⁹/n⁹)

= (m/n)²¹

Read more about Laws of Exponents at: https://brainly.com/question/11761858

#SPJ1

It will take approximately 8.66 years for the investment to double.

The formula to find the amount A(t) of money after t years with principal P, annual interest rate r compounded continuously is:

A(t) = Pe^(rt)

where e is the mathematical constant approximately equal to 2.71828.

To find how long it takes for an investment to double, we need to find the time t such that A(t) = 2P, where P is the initial investment.

In this case, P = $1000, and r = 8% = 0.08.

So, we have:

2P = Pe^(rt)

Dividing both sides by P, we get:

2 = e^(rt)

Taking the natural logarithm of both sides, we get:

ln(2) = rt

Solving for t, we get:

t = ln(2) / r

Substituting the values of r and ln(2), we get:

t = ln(2) / 0.08 ≈ 8.66 years

Therefore, it will take approximately 8.66 years for the investment to double.

Learn more about investment here

https://brainly.com/question/27717275

#SPJ11

(2x+1)(2x-1) as a polynomial in standard form is 4x^2 - 1. The leading coefficient is 4, which tells us that the graph of this function opens upwards. The degree of the polynomial is 2, which means that the graph is a parabola.

The expression (2x+1)(2x−1) can be expanded using the FOIL method, which stands for "First, Outer, Inner, Last". This method involves multiplying each term in the first expression by each term in the second expression, and then combining like terms.

Using this method, we can find that:

(2x+1)(2x−1) = (2x)(2x) + (2x)(−1) + (1)(2x) + (1)(−1)

= 4x^2 − 2x + 2x − 1

= 4x^2 − 1

Thus, we have expanded the expression and simplified it to the standard form of 4x^2 - 1. This form is useful because it allows us to easily identify the leading coefficient and the degree of the polynomial, which are both important properties of a quadratic function. The leading coefficient is 4, which tells us that the graph of this function opens upwards. The degree of the polynomial is 2, which means that the graph is a parabola. By understanding the standard form of a quadratic function, we can more easily analyze and graph various quadratic expressions. Therefore, (2x+1)(2x−1) is equal to 4x^2 - 1 in standard form.

Learn more about parabola here

https://brainly.com/question/29635857

#SPJ11

Answer:

I am not sure.

Step-by-step explanation:

But. Banana peels, clothes, and plastic packets are among the factors that disrupt local train services — and the railways can't be blamed for these delays.

Kendra is training for a marathon. Next week, Kendra will run 26.22 miles.

Kendra's current distance of running 22.8 miles each Saturday indicates a good level of endurance and fitness. However, to prepare for a marathon, she will need to gradually increase her running distance. Kendra has planned to increase her distance by 15% from her current distance. To calculate her new distance, we can use the following formula:

New distance = Current distance + (Percentage increase × Current distance)

Plugging in the values, we get:

New distance = 22.8 + (15% × 22.8) = 26.22 miles (rounded to two decimal places)

Kendra's new distance of 26.22 miles represents a significant increase from her current distance. It is important to note that Kendra should continue to gradually increase her running distance over time to avoid injury and improve her endurance. She can also incorporate other forms of exercise, such as strength training and cross-training, to complement her running and improve overall fitness. By following a well-rounded training plan, Kendra can increase her chances of successfully completing the marathon and achieving her fitness goals.

Learn more about training here

https://brainly.com/question/26270137

#SPJ11

Step-by-step explanation:

44°+53°+x°=180°

97°+x°=180°

x°=180°-97°

x°=83°

It takes 80 hours to fill the pool when the drain is left open.

To solve this problem, we can consider the rates at which the inlet pipe and drain can fill and empty the pool, respectively.

The rate of the inlet pipe is 1 pool per 16 hours, which can be expressed as 1/16 pool per hour.

The rate of the drain is 1 pool per 20 hours, or 1/20 pool per hour.

When both the inlet pipe and drain are open, their rates add up. Therefore, the net rate at which the pool is being filled is:

1/16 - 1/20 = 5/80 - 4/80 = 1/80 pool per hour.

Know more about inlet pipe here:

https://brainly.com/question/15122557

#SPJ11

The mass of the prism is 2370 g

The formula for calculating the volume of a rectangular prism is expressed as;

V = lwh

Such that the parameters are;

From the information given, we have that;

Volume = 15 × 10 × 2

Multiply the values, we get;

Volume = 300 cm³

The formula for density of the material is expressed as;

D = m/v

Where m is the mass and v is the volume

Substitute the values

m = 7. 9 × 300

Multiply the values

m = 2370 g

Learn about volume at: https://brainly.com/question/1972490

#SPJ1

The correct equation for finding the value of d and the the distance between the sun and star is,

⇒ d = x cosФ

Given that;

Diagram for finding the distance between the sun and star.

Let us assume that, the distance between the sun and star is x

Now, We can formulate;

⇒ cos Ф = d / x

⇒ d = x cosФ

Therefore, The correct equation for finding the value of d and the the distance between the sun and star is,

⇒ d = x cosФ

Thus, Correct equation is,

⇒ d = x cosФ

Learn more about the angle visit:;

https://brainly.com/question/25716982

#SPJ1

Answer:

perimeter of G= 52m

Step-by-step explanation:

8÷4=2

so it's a scale factor of 2

if u times each of the sides on rectangle F by 2 those r the sizes of the sides on rectangle G

4×2=8

9×2=18

18+18+8+8=52

Answer:

1384.74 square centimeters

Step-by-step explanation:

The area of a horizontal cross section of a cylinder is the same as the area of the circular base of the cylinder.

To find the area of the circular base of the cylinder, we first need to find the radius of the circle.

The formula for the circumference of a circle is C = 2πr, where r is the radius.

Given the circumference of the cylinder is 131.88 cm, and using 3.14 for π, we can use circumference formula to find the radius of the circular base:

[tex]\begin{aligned}C &= 2\pi r\\\\\implies 131.88 &= 2 \cdot 3.14 \cdot r\\\\131.88 &= 6.28 r\\\\\dfrac{131.88}{6.28} &= \dfrac{6.28 r}{6.28}\\\\21&=r\\\\r&=21\; \sf cm\end{aligned}[/tex]

Substitute the found value of r into the formula for the area of a circle to find the area of a horizontal cross section of the cylinder:

[tex]\begin{aligned}A &= \pi r^2\\\\A&=3.14 \cdot 21^2\\\\A&=3.14 \cdot 441\\\\A&=1384.74\;\sf cm^2\end{aligned}[/tex]

Therefore, the area of a horizontal cross section of the cylinder is approximately 1384.74 square centimeters.

Answer:

-------------------------

The circumference is given as 131.88 centimeters.

We know that the formula for the circumference is:

So,

Solve for radius:

Use the area formula:

Substitute 21 cm for r and calculate the area:

Answer: A is true, B is False, C is False and D is True.

Step-by-step explanation:

A. True. This statement is true by definition of independent events.

B. False. The correct statement is: If events A and B are independent, then P(A ∩ B) = P(A) * P(B). This is the definition of independent events.

C. False. If events A and B are independent, then P(A ∩ B) = P(A) * P(B). Since neither P(A) nor P(B) is necessarily zero, it follows that P(A ∩ B) is also not necessarily zero.

D. True. If events A and B are independent, then P(B|A) = P(B) and by rearranging the conditional probability formula, we get P(B ∩ A) = P(B|A) * P(A) = P(B) * P(A). Similarly, we can also show that P(A|B) = P(A), which means that P(B|A) = P(B) = P(A|B).

Learn more about probability here, https://brainly.com/question/25839839

#SPJ11

the perimeter of the square in the projection is 224 cm.the length of each side of the square in the projection is 7 cm x 8 = 56 cm.

The side length of the square on the monitor is 7 cm. When projected, 1 cm on the monitor represents 8 cm on the screen. Therefore, the length of each side of the square in the projection is 7 cm x 8 = 56 cm.

The perimeter of a square is given by the formula P = 4s, where s is the length of a side. In this case, the length of each side of the square in the projection is 56 cm. Therefore, the perimeter of the square in the projection is:

P = 4 x 56 cm = 224 cm.

So thethe perimeter of the square in the projection is 224 cm.

To  learn  more about perimeter click here:brainly.com/question/7486523

#SPJ11

No, being 2-edge-connected is not a transitive property. Counterexamples can be constructed to show that the conclusion does not always hold.

For example, consider a graph with four vertices v, w, x, and y, where v and w are adjacent, as well as w and x, and x and y. In this case, v and w, and w and y are 2-edge-connected, but v and y are not 2-edge-connected since there is only one edge connecting them.

Thus, it can be concluded that being 2-edge-connected is not a transitive property, and counterexamples can be constructed to demonstrate this fact.

To  learn  more about graph click here:brainly.com/question/17267403

#SPJ11

We can use the properties of the normal distribution to calculate the probability that the total volume shipped is more than 100,000 ft3.

Assuming that the xis are independent with each one having a normal distribution, the total volume shipped can be modeled as the sum of these individual normal distributions. Since the sum of independent normal distributions is also a normal distribution, we can use the properties of the normal distribution to calculate the probability that the total volume shipped is more than 100,000 ft3.

To do this, we need to find the mean and variance of the sum of the xis. The mean of the sum is simply the sum of the means of the individual distributions, while the variance of the sum is the sum of the variances of the individual distributions.

Once we have the mean and variance of the sum, we can standardize the distribution and use a normal probability table or calculator to find the probability that the total volume shipped is more than 100,000 ft3.

In general, the probability of the sum of independent normal distributions exceeding a certain value depends on the number of distributions being summed, their means and variances, and the level of significance chosen for the test. Therefore, we need to specify these parameters to calculate the desired probability.

Learn more about probability brainly.com/question/30034780

#SPJ11

The surface area of the rectangular prism is 332 unit ²

The area occupied by a three-dimensional object by its outer surface is called the surface area. Generally, the surface area of a prism is expressed as: SA = 2B + ph

Moreover, we can calculate the surface area of rectangular prism as;

SA = 2(lb + lh +bh)

l = 10 units

b = 4 units

h = 9 units

SA = 2(10×4 + 10×9 + 4×9)

SA = 2( 40+90+36)

SA = 2( 166)

SA = 332 units²

therefore the area of the prism is 332 unit ²

learn more about surface area of prism from

https://brainly.com/question/1297098

#SPJ1

The missing values are 7 and -4.

We have,

Combine like terms on the left side of the equation:

3x + 5 = ax + b

Since the equation holds for all values of x, we can substitute in a specific value of x and solve for the unknowns a and b.

Let's use x = 1:

3(1) + 5 = a(1) + b

Simplifying:

a + b = 8

Now let's use x = 2:

3(2) + 5 = a(2) + b

Simplifying:

2a + b = 11

We now have two equations with two unknowns:

a + b = 8

2a + b = 11

Subtracting the first equation from the second:

a = 3

Substituting into the first equation:

3 + b = 8

b = 5

Thus,

The missing values are 7 and -4:

Learn more about equations here:

https://brainly.com/question/3118662

#SPJ1