If the weights of 1,000 adult men in a county are plotted on a histogram, which curve is most likely to fit the histogram?

A.
a U-shaped curve, better known as a normal distribution

B.
a star-shaped curve, better known as a normal distribution

C.
a bell-shaped curve, better known as a normal distribution

D.
a bell-shaped curve, known as an exponential distribution

Answers

Answer 1

The correct answer for the question is,

C. a bell-shaped curve, better known as a normal distribution

We have to given that;

The weights of 1,000 adult men in a county are plotted on a histogram,

Hence, the curve will most probably be a bell-shaped curve, better known as a normal distribution.

So, The correct curve for fit the histogram is,

⇒ a bell-shaped curve, better known as a normal distribution

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Related Questions

Let U denote a random variable uniformly distributed over (0,1). Compute the conditional distribution of U given that a. U > a; b. U < a; where 0 < a < 1.

Answers

a. The conditional distribution of U is 1 / (u - a), a < u ≤ 1.

b.  The conditional distribution of U is  1 / (au), 0 < u < a.

We will use Bayes' theorem to compute the conditional distributions.

a. U > a:

The probability that U > a is given by P(U > a) = 1 - P(U ≤ a) = 1 - a. To compute the conditional distribution of U given that U > a, we need to compute P(U ≤ u | U > a) for u ∈ (a,1). By Bayes' theorem,

P(U ≤ u | U > a) = P(U > a | U ≤ u) P(U ≤ u) / P(U > a)

= [P(U > a ∩ U ≤ u) / P(U ≤ u)] [P(U ≤ u) / (1 - a)]

= [P(a < U ≤ u) / (u - a)] [1 / (1 - a)]

= 1 / (u - a), a < u ≤ 1.

Therefore, the conditional distribution of U given that U > a is a uniform distribution on (a,1), i.e., U | (U > a) ∼ U(a,1).

b. U < a:

The probability that U < a is given by P(U < a) = a. To compute the conditional distribution of U given that U < a, we need to compute P(U ≤ u | U < a) for u ∈ (0,a). By Bayes' theorem,

P(U ≤ u | U < a) = P(U < a | U ≤ u) P(U ≤ u) / P(U < a)

= [P(U < a ∩ U ≤ u) / P(U ≤ u)] [P(U ≤ u) / a]

= [P(U ≤ u) / u] [1 / a]

= 1 / (au), 0 < u < a.

Therefore, the conditional distribution of U given that U < a is a Pareto distribution with parameters α = 1 and xm = a, i.e., U | (U < a) ∼ Pa(1,a).

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Suppose that X1,X2,...,Xn are i.i.d. random variables on the interval [0, 1] with the density function: f(x|α) = Γ(3α)/Γ(α)Γ(2α) *xα−1(1 −x)2α−1 where Γ(x) is the gamma function and where α > 0 is a parameter to be estimated from the sample. Given: E(X) = 1/3 V ar(X) = 2/9(3α+1) a) How could the method of moments be used to estimate α? b) What equation does the mle of α satisfy? c) What is the asymptotic variance of the mle?

Answers

a) Method of moments can be used to estimate α by equating the first two moments (sample mean and variance) with their theoretical counterparts and solving for α.

b) The MLE of α satisfies the equation: Ψ(3α) − Ψ(α) + 2nΣ[ln(Xi) − ln(1 − Xi)] = 0, where Ψ is the digamma function.

c) The asymptotic variance of the MLE is (9n[Ψ'(3α) − Ψ'(α)])^(-1), where Ψ' is the trigamma function.

a) The method of moments involves equating the first two moments of the distribution with their sample counterparts and solving for the parameter α. Setting the theoretical mean and variance of the given distribution equal to their sample counterparts and solving for α, we get α = (4n − 1)/(9n − 2).

b) The log-likelihood function for the given distribution is l(α) = n[ln(Γ(3α)) − ln(Γ(α)) − ln(Γ(2α))] + (α − 1)Σ[ln(Xi) + 2ln(1 − Xi)]. Taking the derivative of l(α) with respect to α and equating it to zero, we get the MLE of α as the solution to the equation: Ψ(3α) − Ψ(α) + 2nΣ[ln(Xi) − ln(1 − Xi)] = 0, where Ψ is the digamma function.

c) The asymptotic variance of the MLE can be found using the Fisher information. The Fisher information is given by I(α) = −n[Ψ''(α) + 2Ψ''(2α)], where Ψ'' is the polygamma function. The asymptotic variance of the MLE is then (I(α)^(-1)), which simplifies to (9n[Ψ'(3α) − Ψ'(α)])^(-1), where Ψ' is the trigamma function.

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If VI + Vy=9 and y(64) = 1, find y(64) by implicit differentiation. (64) =

Answers

The y is a constant function, since its derivative is 0, Therefore, y(64) = 1

To solve this problem, we need to use implicit differentiation. First, we differentiate both sides of the equation VI + Vy = 9 with respect to x (since y is a function of x) using the chain rule:

d/dx(VI) + d/dx(Vy) = d/dx(9)

Since VI is a constant, its derivative is 0, and we can simplify to:

V d/dx(y) = 0

Now we can solve for d/dx(y):

d/dx(y) = 0/V = 0

This tells us that y is a constant function, since its derivative is 0. Therefore, y(64) = 1 is the only possible value for y(64), since it is given in the problem.

So, to answer the question, y(64) = 1.


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please answer this question

Answers

A graph of the triangle after a dilation by scale factor 3 using the blue dot as the centre of enlargement is shown below.​

What is a dilation?

In Mathematics and Geometry, a dilation is a type of transformation which typically changes the size of a geometric object, but not its shape.

In order to dilate the coordinates of the preimage (right-angled triangle) by using a scale factor of 3 centered at the blue dot, the transformation rule would be represented this mathematical expression:

(x, y)  →  (k(x - a) + a, k(y - b) + b)

(x, y)  →  (3(x - a) + a, 3(y - b) + b)

In this scenario, the intersection of the three (3) medians would represent the centre of the given traingle;

AO ≅ 20D

BO ≅ 20E

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Obtain the response of the following models with zero initial conditions. Note: Treat the unit step input us(t) as a constant value of 1. Zero initial conditions means x(0) = X(0) = 0 a. č + 4x + 8x = 2us(t) b. * + 8x + 12x = 2us(t) C. ï + 4x + 4x = 2us(t)

Answers

a. The characteristic equation of the system is s^3 + 4s^2 + 8s = 0, which has roots at s = 0 and s = -2 ± 2i. Since the system is stable (all poles have negative real parts), we can use partial fraction expansion to obtain the response:

X(s) = (1/2s) - (1/(s+2+2i)) + (1/(s+2-2i))

Taking the inverse Laplace transform, we get:

x(t) = (1/2) - e^(-2t)cos(2t) - (1/2)e^(-2t)sin(2t)

b. The characteristic equation of the system is s^3 + 8s^2 + 12s = 0, which has roots at s = 0 and s = -4 ± 2√3i. Since the system is stable, we can use partial fraction expansion to obtain the response:

X(s) = (1/2s) - (1/(s+4+2√3i)) + (1/(s+4-2√3i))

Taking the inverse Laplace transform, we get:

x(t) = (1/2) - e^(-4t)cos(2√3t) - (1/2)e^(-4t)sin(2√3t)

c. The characteristic equation of the system is s^3 + 4s^2 + 4s = 0, which has a double root at s = -2 and a simple root at s = 0. Since the system is marginally stable (one pole has zero real part), we need to use a different approach to obtain the response. The transfer function of the system is:

G(s) = (2/(s+2)^2)

Using the final value theorem, we can find the steady-state response to a unit step input:

x_ss = lim(s->0) sX(s)G(s) = lim(s->0) (2s/(s+2)^2) = 0

Therefore, the response of the system is:

x(t) = x_ss + x_p(t) = 0 + 2tu(t) = 2t, for t >= 0.

Sally's sweet shoppe has cylindrical cups that have a diameter of 8 centimeters and a height of 5 centimeters which cup has the larger volume in cubic centimeters the cone or the cylinder and by how many cubic centimeters.
HELP IS GREATLY APPRECIATED (ASAP) THANK YOU!
have a good day/night/or morning :)
~Madi

Answers

Sally's sweet shoppe has cylindrical cups that have a diameter of 8 centimeters and a height of 5 centimeters the cylinder has a larger volume than the cone, by 64π cubic centimeters.

The sweet shoppe sells cylindrical cups with a diameter of 8 centimeters and a height of 5 centimeters.

The volume of the cylinder can be calculated using the formula V = [tex]\pi r^2h[/tex], where r is the radius (half the diameter) and h is the height. So, for this cylinder:

r = 4 cm

h = 5 cm

[tex]V_{cylinder} = \pi (4cm)^2(5cm) = 80\pi[/tex] cubic cm

The volume of a cone can be calculated using the formula V = (1/3)πr^2h, where r is the radius and h is the height.

The radius of the cone is half the diameter, or 4 centimeters, and we need to find the height of the cone.

The height of the cone can be found using the Pythagorean theorem, since the radius and height of the cone form a right triangle. The height is the square root of the difference between the hypotenuse (the slant height of the cone) and the radius, squared:

h = sqrt[tex]((5cm)^2 - (4cm)^2)[/tex] = 3cm

Now we can calculate the volume of the cone:

r = 4 cm

h = 3 cm

V_cone = (1/3)π[tex](4cm)^2[/tex](3cm) = 16π cubic cm

Comparing the volumes of the cylinder and cone, we find:

V_cylinder - V_cone = 80π - 16π = 64π cubic cm

Thus, the cylinder has a larger volume than the cone, by 64π cubic centimeters.

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life exists elswhere within 4% of the real answer with 95% confidence? past data indicate that 30% of the general population holds this belief

Answers

Based on the past data indicating that 30% of the general population holds the belief that life exists elsewhere within 4% of the real answer, we can use statistical analysis to determine the level of confidence we can have in this statement.

With a 95% confidence level, we can say that there is a high likelihood that this belief is true within a margin of error of 4%. In other words, we can be 95% confident that the true percentage of people who believe that life exists elsewhere within 4% of the real answer falls somewhere between 26% and 34%.


Based on the information provided, it seems that 30% of the general population believes that life exists elsewhere in the universe. There is a 95% confidence level that the true percentage of people holding this belief is within 4% of the given 30% estimate. This means that the actual percentage of people with this belief likely falls between 26% and 34%.

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are y= 2x+4 and y=1/2x -1 parallel or perpendicular

Answers

Answer:

neither.

Step-by-step explanation:

perpendicular would have to be -1/2x instead of 1/2x and parallel would have to be 2x.

Help me please. Thank you!Current Attempt in Progress Consider the parallelepiped with adjacent edges u = 7i+2j+k v=i+j+9k w = i + 4j + 9 Find the volume.

Answers

he

volume

of the parallelepiped is 235 cubic units.

V = |u · (v × w)|

where · represents the dot product and × represents the

cross product

.

First, we need to find the cross product of v and w:

v × w = (i+j+9k) × (i+4j+9k)
     = (36i - 7j - 3k)

Next, we take the dot product of u with the cross product of v and w:

u · (v × w) = (7i+2j+k) · (36i - 7j - 3k)
           = 252 - 14 - 3
           = 235

Finally, we take the absolute value of this result to get the volume:

V = |u · (v × w)| = |235| = 235 cubic units.

Therefore, the volume of the parallelepiped is 235 cubic units.


To find the volume of the

parallelepiped

with adjacent edges u, v, and w, you need to calculate the scalar triple product of these vectors. The scalar triple product is the absolute value of the

determinant

of the matrix formed by the components of the three vectors.

Given vectors:
u = 7i + 2j + k
v = i + j + 9k
w = i + 4j + 9k

Step 1: Write the matrix using the components of u, v, and w:
| 7  2  1 |
| 1  1  9 |
| 1  4  9 |

Step 2: Calculate the determinant of the matrix:
7 * (1 * 9 - 4 * 9) - 2 * (1 * 9 - 1 * 9) + 1 * (1 * 4 - 1 * 1)

Step 3: Simplify the expression:
7 * (9 - 36) - 2 * (9 - 9) + (4 - 1)

Step 4: Calculate the result:
7 * (-27) - 0 + 3

Step 5: Find the absolute value of the result:
|-189 + 3| = |-186| = 186

The volume of the parallelepiped is 186 cubic units.

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a plot of data is used to demonstrate the relationship between the number of hours a person watched television and their gpa. as the number of hours of television increases, gpa goes down. this relationship is:

Answers

In this case, as the number of hours spent on television increases, the GPA decreases. This relationship is called a negative correlation.

The plot of data that demonstrates the relationship between the number of hours a person watches television and their GPA is an essential tool to understand the correlation between these two factors.

From the plot, we can see that as the number of hours of television increases, the GPA goes down. This relationship suggests that the more time a person spends watching television, the lower their academic performance tends to be.

It is crucial to note that this relationship is not a direct causation. The plot of data does not prove that watching television causes a decrease in GPA.

It merely shows that there is a correlation between these two factors. There may be other underlying factors that contribute to the lower GPA of people who watch more television, such as lack of study time or poor time management skills.

Therefore, it is essential to use caution when interpreting the plot of data and not make any hasty conclusions about the relationship between the number of hours a person watches television and their academic performance.

Still, the data provides valuable insights that can help individuals make informed decisions about how they manage their time and prioritize their activities .A plot of data illustrates the relationship between the number of hours a person watches television and their GPA.

In this case, as the number of hours spent on television increases, the GPA decreases. This relationship is called a negative correlation.

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Use the integral test to determine whether the infinite series is convergent.

1. ∑ infinity _n=20 ((n^2)/((n^3 +6)^9/2)))

2. ∑ infinity _n=4 (14ne^(-n^2))

Answers

The integral converges, the series also converges by the integral test. Therefore, ∑ infinity _n=4 (14ne^(-n^2)) converges.

For the first series, we can use the integral test. We need to find a function f(x) that is continuous, positive, and decreasing such that f(n) = ((n^2)/((n^3 +6)^9/2)) for all positive integers n. Then, we can use the integral test to determine whether the series converges or diverges by evaluating the integral of f(x) from 20 to infinity.

Let f(x) = (x^2)/((x^3 + 6)^9/2). Then, we can take the derivative of f(x) and find that f'(x) = ((x^3 - 18)/(x^3 + 6)^(11/2)) which is negative for all x > 0. This means that f(x) is decreasing for all x > 0. Additionally, f(x) is positive for all x > 0 since the numerator and denominator are both positive. Therefore, we can use the integral test.

We evaluate the integral of f(x) from 20 to infinity by using a substitution. Let u = x^3 + 6. Then, du/dx = 3x^2 and dx = du/(3x^2). Substituting, we get:

∫((x^2)/((x^3 + 6)^9/2))dx = (1/3)∫u^(-9/2)du
= (-2/15)u^(-7/2) from 20^3 + 6 to infinity
= (2/15)(20^3 + 6)^(-7/2)

Since the integral converges, the series also converges by the integral test. Therefore, ∑ infinity _n=20 ((n^2)/((n^3 +6)^9/2))) converges.

For the second series, we can also use the integral test. We need to find a function f(x) that is continuous, positive, and decreasing such that f(n) = 14ne^(-n^2) for all positive integers n. Then, we can use the integral test to determine whether the series converges or diverges by evaluating the integral of f(x) from 4 to infinity.

Let f(x) = 14xe^(-x^2). Then, we can take the derivative of f(x) and find that f'(x) = (14 - 28x^2)e^(-x^2) which is negative for x > 1/sqrt(2) and positive for 0 < x < 1/sqrt(2). This means that f(x) is decreasing for x > 1/sqrt(2) and increasing for 0 < x < 1/sqrt(2). Additionally, f(x) is positive for all x > 0 since e^(-x^2) is always positive. Therefore, we can use the integral test.

We evaluate the integral of f(x) from 4 to infinity by using a substitution. Let u = x^2. Then, du/dx = 2x and dx = du/(2x). Substituting, we get:

∫(14xe^(-x^2))dx = 7∫e^(-u)du
= -7e^(-u) from 4^2 to infinity
= 7e^(-16)

Since the integral converges, the series also converges by the integral test. Therefore, ∑ infinity _n=4 (14ne^(-n^2)) converges.

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Question below in image pls help i would appreciate it

Answers

The equation that model the relationship on the graph in slope-intercept form can be presented as follows;

y = (7/3)x + (-2/3)

What is the slope intercept form of a linear equation?

The slope-intercept form of a linear equation is an equation of the form; y = m·x + c

Where;

m = The slope of the graph of the equation

c = The y-intercept

The first difference are;

-3 - (-10) = 7

4 - (-3) = 7

11 - 4 = 7

The data on the table represent the data for a linear equation, since the difference between the successive x-values are the same and equivalent to 3

The slope of the graph of the equation is therefore;

(11 - 4)/(5 - 3) = 7/3

The equation of that represents the data is therefore;

y - 11 = (7/3)·(x - 5) = (7/3)·x - 35/3 = (7/3)·x - 11 2/3

y = (7/3)·x - 11 2/3 + 11 = (7/3)·x - 2/3

The equation is therefore;

y = (7/3)·x - 2/3

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researchers believed that an increase in lean body mass is associated with an increase in maximal oxygen uptake. a scatterplot of the measurements taken from 18 randomly selected college athletes displayed a strong positive linear relationship between the two variables. a significance test for the null hypothesis that the slope of the regression line is 0 versus the alternative that the slope is greater than 0 yielded a p-value of 0.04. which statement is an appropriate conclusion for the test?

Answers

The results indicate a statistically significant positive linear relationship between lean body mass and maximal oxygen uptake in college athletes.

The researchers hypothesized that there is a positive relationship between lean body mass and maximal oxygen uptake in college athletes.

To test this hypothesis, they collected data from 18 randomly selected college athletes and created a scatterplot of the measurements.

The scatterplot displayed a strong positive linear relationship between the two variables, indicating that their hypothesis may be correct.

To further investigate the relationship between the variables, the researchers performed a significance test.

Specifically, they tested the null hypothesis that the slope of the regression line is 0, meaning there is no relationship between the variables, versus the alternative hypothesis that the slope is greater than 0, indicating a positive relationship.

The test yielded a p-value of 0.04, which is below the commonly used significance level of 0.05.

This means that there is strong evidence against the null hypothesis and we can reject it.

Therefore, we can conclude that there is a statistically significant positive linear relationship between lean body mass and maximal oxygen uptake in college athletes.

In practical terms, this suggests that increasing lean body mass through exercise or other means may lead to an improvement in maximal oxygen uptake, which is an important measure of physical fitness and endurance.

Further research can explore the specific mechanisms that underlie this relationship and the potential benefits of interventions aimed at increasing lean body mass for athletic performance and overall health.

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a data analyst is working on a project around a national supply chain. they have a dataset with lots of relevant data from about half of the country. however, they decide to generate new data that represents the entire nation. what type of insufficient data does this scenario describe?

Answers

The scenario describes insufficient data in terms of geographical coverage. The data analyst only had relevant data from half of the country, so they needed to generate new data to represent the entire nation.

This means that the dataset was incomplete and lacked the necessary information to analyze the national supply chain as a whole, The scenario you described represents a type of insufficient data known as "incomplete data" or "missing data.

In this case, the data analyst is working on a project around a national supply chain, but they only have data from about half of the country. To address this issue, they decide to generate new data that represents the entire nation. This process is often done using data imputation techniques or by obtaining additional data sources to fill the gaps in the existing dataset.

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use appropriate algebra and theorem 7.2.1 to find the given inverse laplace transform. (write your answer as a function of t.) ℒ−1 2 s − 1 s3 2

Answers

Answer:

need this

Step-by-step explanation:

Lesson 8.1.14 Cool Down *If I have two parallel lines cut by a transversal, I can identify alternate interior angels and use that to find missing angle measurements. The diagram shows two parallel lines cut by a transversal. One angle measure is shown. Find the values of a, b, c, d , e, f, and g .

Answers

The measure of the angle for the given parallel lines cut by transversal is given by a = 126°, b =54°, c = 126°, d = 54°, e = 126°,  f = 54° and g = 126°.

From the attached figure,

Two parallel lines and a transversal cut both the parallel lines.

Measure of one of the angle = 54°

Measure of angle b degrees is vertically opposite angle .

This implies,

Measure of angle b = 54°

Measure of angle a is linear pair to 54°

⇒ Measure of angle a = 180° - 54°

⇒Measure of angle a =  126°

Measure of angle c is vertically opposite to ∠a

⇒Measure of angle c = 126°

using corresponding angle theorem,

Measure of angle c = measure of angle g

⇒measure of angle g = 126°

Measure of ∠a = Measure of ∠e

⇒Measure of ∠e = 126°

Measure of angle b = Measure of angle f

⇒Measure of angle f = 54°

Measure of d is vertically opposite to ∠f

⇒Measure of angle d = 54°

Therefore, the values of the measure of angle is equal to a = 126°, b =54°,

c = 126°, d = 54°, e = 126°,  f = 54° and g = 126°.

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what is the set of all integer solutions for the inequality -1 less than or equal to x - rad 5 less than 4

Answers

The set of all integer solutions for the inequality -1 ≤ x - √5 < 4 is {-1, 0, 1, 2, 3, 4}.

The inequality:

-1 ≤ x - √5 < 4

To isolate x by adding √5 to each side:

-1 + √5 ≤ x < 4 + √5

The inequality is now expressed in terms of x with lower and upper bounds.

To find the set of all integer solutions for this inequality, we need to identify all integer values of x that fall within this range.

The integer values between -1 + √5 and 4 + √5 are:

-1 + √5 ≈ 0.236 and 4 + √5 ≈ 5.236

The integers between these two values are 0, 1, 2, 3, 4, and 5.

The inequality is inclusive of the lower bound (-1 ≤ x - √5), we need to include the integer value that satisfies this condition.

Thus, the set of integer solutions for the inequality is:

{-1, 0, 1, 2, 3, 4}

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Complete the following using present value. (Use the Table provided.) (Do not round intermediate calculations. the "Rate used to the nearest tenth percent. Round the "PV factor" to 4 decimal places and final answer to the nearest cent.) On PV Table 12.3 Rate used PV factor used PV of amount desired at end of period Period used Length of time Rate Compounded Amount desired at end of period $ 9,800 % 4 years 6% Monthly

Answers

The present value of the amount desired at the end of the period is $7,246.92.

To find the present value of the amount desired at the end of the period, we need to use present value tables. The given interest rate is 6% compounded monthly.

Using PV Table 12.3, we can find the PV factor for 48 periods (4 years x 12 months/year = 48 months) at 0.5% (6%/12 months) interest rate. The PV factor for 48 periods at 0.5% is 0.8183.

The formula for present value is:

[tex]PV = Amount / (1 + r)^n[/tex]

where r is the interest rate per period and n is the number of periods.

Plugging in the values, we get:

[tex]PV = $9,800 / (1 + 0.005)^48[/tex]

PV = $9,800 / 1.3511

PV = $7,246.92

Therefore, the present value of the amount desired at the end of the period is $7,246.92.

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I need to know how to get the answer and the answer also click on this to see pick

Answers

The number of blocks that Tommy travels is given as follows:

26 blocks.

How to calculate the distance between two points?

Suppose that we have two points of the coordinate plane, and the ordered pairs have coordinates [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex].

The shortest distance between them is given by the equation presented as follows, derived from the Pythagorean Theorem:

[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Then the distances are given as follows:

(0,0) to (0, 8): 8 blocks.(0, 8) to (5,8): 5 blocks.(5, 8) to (5,0): 8 blocks.(5,0) to (0,0): 5 blocks.

Then the total number of blocks is given as follows:

2 x (8 + 5) = 26 blocks.

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Suppose a cheetah could travel 1. 5 hours a top speed covering 111. 9 miles how far could the cheetah travel in 1 hour

Answers

The cheetah can travel 74.6 miles in 1 hour at its top speed.

To determine how far a cheetah can travel in 1 hour, we need to use the information provided and make some calculations.

First, we know that the cheetah can travel at its top speed for 1.5 hours, covering a distance of 111.9 miles. This means that we can calculate the cheetah's average speed during this time as follows:

Average speed = Distance covered / Time taken

Plugging in the values, we get:-

Average speed = 111.9 miles / 1.5 hours = 74.6 miles/hour

This means that the cheetah can run at an average speed of 74.6 miles per hour.

Now, to determine how far the cheetah can travel in 1 hour, we can use the formula:

Distance = Speed x Time

Plugging in the values, we get:-

Distance = 74.6 miles/hour x 1 hour = 74.6 miles

Therefore, the cheetah can travel 74.6 miles in 1 hour at its top speed.

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A population proportion is 0.70. A sample of size 300 will be taken and the sample proportion p will be used to estimate the population proportion. (Round your answers to four decimal places.) (a) What is the probability that the sample proportion will be within +0.03 of the population proportion? (b) What is the probability that the sample proportion will be within +0.05 of the population proportion?

Answers

(a) The probability that the sample proportion will be within +0.03 of the population proportion is 0.7242.

(b) The probability that the sample proportion will be within +0.05 of the population proportion is 0.9312.

(a) The standard error of the sample proportion is given by:

SE = √[p(1-p)/n]

where p = population proportion, n = sample size

SE = √[0.7(1-0.7)/300] = 0.0274

To find the probability that the sample proportion will be within +0.03 of the population proportion, we need to find the z-scores for the upper and lower limits of the interval and then find the probability between those z-scores using a standard normal distribution table. The z-score for +0.03 is:

z = (0.03)/0.0274 = 1.09

The z-score for -0.03 is -1.09 (since it is the same distance from the mean but in the opposite direction). Thus, we need to find the probability between -1.09 and 1.09:

P(-1.09 < z < 1.09) = P(z < 1.09) - P(z < -1.09)

Using a standard normal distribution table, we find:

P(z < 1.09) = 0.8621

P(z < -1.09) = 0.1379

Therefore, the probability that the sample proportion will be within +0.03 of the population proportion is:

0.8621 - 0.1379 = 0.7242 (rounded to four decimal places)

(b) Using the same formula for standard error, we get:

SE = √[0.7(1-0.7)/300] = 0.0274

To find the probability that the sample proportion will be within +0.05 of the population proportion, we need to find the z-scores for the upper and lower limits of the interval and then find the probability between those z-scores using a standard normal distribution table. The z-score for +0.05 is:

z = (0.05)/0.0274 = 1.82

The z-score for -0.05 is -1.82 (since it is the same distance from the mean but in the opposite direction). Thus, we need to find the probability between -1.82 and 1.82:

P(-1.82 < z < 1.82) = P(z < 1.82) - P(z < -1.82)

Using a standard normal distribution table, we find:

P(z < 1.82) = 0.9656

P(z < -1.82) = 0.0344

Therefore, the probability that the sample proportion will be within +0.05 of the population proportion is:

0.9656 - 0.0344 = 0.9312 (rounded to four decimal places)

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PLEASE HELP ASAP‼️Solve the triangle PQR (find m

siden).
R
12.3 m
P
6.71 m
r =
Q

Answers

P= 28.6137
Q= 61.3863
R= 14.0112

Consider a curve of the form y(t) = at + b t , with a local minimum at (3, 12). (a) Given only (3, 12) tells us that (i) y(12) = 3 (ii) y(12) = 0 (iii) y(3) = 12 (iv) y(3) = 0

Given that (3, 12) is also a local minimum tells us that (i) y '(3) = 12 (ii) y '(3) = 0 (iii) y '(12) = 0 (iv) y '(12) = 3

(b) Find y '(t) = a−bt^−2

(c) Now find the exact values of a and b that satisfy the conditions in part (a)

Answers

The curve is given by: y(t) = -4t + 4[tex]t^2[/tex] And the derivative is: y'(t) = -4 + 8t

(a) Given that (3, 12) is a local minimum, we know that the derivative of y(t) at t = 3 is zero. So, y'(3) = 0. This eliminates options (i) and (iv) for the first question.

Since y(3) = 12, the correct answer to the first question is (iii) y(3) = 12.

(b) To find y'(t), we take the derivative of y(t) with respect to t:

y'(t) = a + b

(c) We know that y(3) = 12, so we can substitute t = 3 and get:

y(3) = a(3) + b(3) = 12

We also know that y'(3) = 0, so we can substitute t = 3 into y'(t) and get:

y'(3) = a + b = 0

We now have two equations with two unknowns:

a(3) + b(3) = 12

a + b = 0

Solving for a and b, we get:

a = -4

b = 4

Therefore, the curve is given by:

y(t) = -4t + 4[tex]t^2[/tex]

And the derivative is:

y'(t) = -4 + 8t

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What is the derivative of f(x) = 3x^4 + 2x^3 - 5x^2 + 7x - 2 with respect to x?

Answers

The derivative of f(x) = 3x^4 + 2x^3 - 5x^2 + 7x - 2 with respect to x is:

f'(x) = 12x^3 + 6x^2 - 10x + 7

3x2 +4x-5 = 5x2 + 2x +1

Answers

The values of x which are solutions to the given quadratic equation as required to be determined are; x = (1 ± i√11) / 2.

What is the solution for x in the given quadratic equation?

It follows from the task content that the given quadratic equation is to be solved for variable, x.

3x² + 4x - 5 = 5x² + 2x + 1;

By collect like terms and evaluating; we have that;

2x² - 2x + 6 = 0

By solving the equation by means of the formula method; we find that;

x = (1 ± i√11) / 2

Ultimately, the values of x which holds True are; x = (1 ± i√11) / 2.

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A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 49 ft/s. Its height in feet after t seconds is given by y = 49t25t2a. Find the average velocity for the time period starting when t = 1 seconds and lasting 0.5 seconds, 0.01 seconds, 0.001 seconds.b. Estimate the instantaneous velocity at t = 1

Answers

The estimated instantaneous velocity at t = 1 is -1 ft/s.

a. To find the average velocity for a time period, we need to find the change in distance over the change in time.

For the time period starting when t = 1 second and lasting 0.5 seconds:

- Distance at t = 1.5 seconds: y = 49(1.5) - 25(1.5)^2 = 33.75 feet
- Distance at t = 1 second: y = 49(1) - 25(1)^2 = 24 feet

Change in distance = 33.75 - 24 = 9.75 feet
Change in time = 0.5 seconds

Average velocity = change in distance / change in time = 9.75 / 0.5 = 19.5 ft/s

For the time period starting when t = 1 second and lasting 0.01 seconds:

- Distance at t = 1.01 seconds: y = 49(1.01) - 25(1.01)^2 = 24.96 feet
- Distance at t = 1 second: y = 49(1) - 25(1)^2 = 24 feet

Change in distance = 24.96 - 24 = 0.96 feet
Change in time = 0.01 seconds

Average velocity = change in distance / change in time = 0.96 / 0.01 = 96 ft/s

For the time period starting when t = 1 second and lasting 0.001 seconds:

- Distance at t = 1.001 seconds: y = 49(1.001) - 25(1.001)^2 = 24.9996 feet
- Distance at t = 1 second: y = 49(1) - 25(1)^2 = 24 feet

Change in distance = 24.9996 - 24 = 0.9996 feet
Change in time = 0.001 seconds

Average velocity = change in distance / change in time = 0.9996 / 0.001 = 999.6 ft/s

b. To estimate the instantaneous velocity at t = 1, we can take the derivative of the height equation with respect to time:

y = 49t - 25t^2

y' = 49 - 50t

At t = 1, y' = -1

So the estimated instantaneous velocity at t = 1 is -1 ft/s.

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an employee travels 26 miles round trip from his home to work. if he works 5 days a week, how many miles does he travel in a week?

Answers

Answer: 130 miles every week

Step-by-step explanation:

26*5=130

Round trip means from home to work and back home

Bessie took out a subsidized student loan of $5000 at a 2.4% APR,
compounded monthly, to pay for her last semester of college. If she will begin
paying off the loan in 10 months with monthly payments lasting for 20 years,
what will be the total amount that she pays in interest on the loan?

Answers

If she will pay 2.4% of the end of the loan plus $0.57 each month then after 20 years the total amount will be; $6338.26

Given that Bessie took out a subsidized student loan of $5000 at a 2.4% APR, compounded monthly, to pay for her last semester of college.

When she will begin paying off the loan in 10 months with monthly payments lasting for 20 years,

A = p(1+ r/n) nl

Because in our example, n = 12 (monthly), p = $5000 , r = 2.4% = = 0.024, and t = 20 years.

A = $69457.89.

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How many arrangements are there of tamely with either t before a, or a before m, or m before e? by "before," we mean anywhere before, not just immediately before.

Answers

To solve this problem, we can use the principle of inclusion-exclusion. First, we can count the total number of arrangements of the letters in "tamely," which is 6! = 720.

Next, we can count the number of arrangements where t is before a, which is 5! (since we treat ta as a single unit) multiplied by the 2 ways to arrange the remaining letters, which is 2*4! = 48. Similarly, we can count the number of arrangements where a is before m or m is before e, which is also 48.

However, we have double-counted the arrangements where both t is before a and a is before m, or where both t is before a and m is before e, or where both a is before m and m is before e.

Each of these arrangements can be counted as 4! = 24. Therefore, the total number of arrangements that satisfy the conditions is 48+48+48-24-24-24+0 = 72. In summary, there are 72 arrangements of "tamely" with either t before a, or a before m, or m before e.

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the band is holding a raffle this year and will give away for cash prizes of $100, $500, $1000, and $5000. their goal is to raise a profit of at least $6,000. if the tickets sell for $10 each and there are 74 band members, how many tickets will each band member need to sell in order to meet their goal?

Answers

Answer: 1750

Step-by-step explanation:

100+500+1000+5000+6000= 12600x10= 126000

126000 divided 74 = 1750

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