What is the diameter of this circle?​

Answer:

D 60

Step-by-step explanation:

f(5)=35

f(6)=40

f(7)=45

f(8)=50

f(9)=55

f(10)=60

Answer:

d 60

Step-by-step explanation:

The concept of statistical significance is mathematically defined and widely accepted by those who use it to assess the usefulness of scientific claims.

However, there is no single definition for practical significance. It is subjective in nature, experiential, and each person decides what it is based on their own experiences.

Thus, it is clear that while Practical significance lacks a common definition, statistical significance has a mathematical definition and is widely accepted by those who use it to assess the usefulness of scientific claims. It is a subjective concept that each person decides for themselves based on their personal experiences.

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Answer:

i need them

Step-by-step explanation:

The coordinates of point P are (39/7,-2/7), and point Q is the same as point P.

Given equations are,

\(2x - 3y = 12---(1)\)

\(x + 2y = 5---(2)\)

Let's use the method of substitution:

\(x = 5 - 2y---(3)\)

Substitute the value of x in Equation 1.

\(2(5 - 2y) - 3y = 12\)

Solve the equation for y.

\(10 - 4y - 3y = 12\)

\(- 7y = 2\)

\(y = - 2/7\)

Substitute the value of y in equation 2.

\(x+ 2(- 2/7) = 5\)

\(x - 4/7 = 5\)

\(x = 5 + 4/7\)

\(x = 39/7\)

Therefore, intersection point P and point Q coordinates are (39/7, - 2/7).

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0.470

To calculate the mean of the sampling distribution of the sample proportion for those in the category unhappy or very unhappy, you should follow the steps given below:

Step 1: Identify the values.n = 459p = 0.47Step 2: Determine the mean of the sampling distribution of the sample proportion of customers who are unhappy or very unhappy.μ = p = 0.47. Therefore, the mean of the sampling distribution of the sample proportion for those in the category unhappy or very unhappy is 0.470 (rounded to three decimal places).Note: A mean is a statistical measure that is used to calculate the central tendency of a dataset. It is defined as the average of a dataset or a set of numbers. The mean can be calculated for both interval-scaled measures as well as proportion.

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Answer:

125000

Step-by-step explanation:

Answer:

aprox: 9 years?

Step-by-step explanation:

im sorry if this is wrong!

The metal tool consists of a semicircle and an isosceles triangle joined together. The formula to calculate the area of the semicircle is\(πr²/2\), and the formula to calculate the area of an isosceles triangle is \((base * height) / 2.\)

The radius of the semicircle is equal to the length of the base of the isosceles triangle. Therefore, let's consider the base and height of the triangle to be equal to x, and the radius of the semicircle is also x.Let's start by calculating the area of the semicircle. We know that π is approximately 3.14.

Therefore, the area of the semicircle is:\(πr²/2 = (3.14 * x²)/2 = 1.57x²\)Now, let's calculate the area of the isosceles triangle. Therefore, the height of the triangle is equal to x/2. Hence, the area of the triangle is:\((base * height)/2 = (x * x/2)/2 = x²/4\)Therefore, the total area of the metal tool is the sum of the area of the semicircle and the area of the triangle.

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To find the parametric equations for the line through point P(1, 4, 5) that is parallel to the plane x + y + z = 2 and perpendicular to another line, we need to determine the direction vector of the line and use it to construct the parametric equations.

The direction vector is obtained by taking the cross product of the normal vector of the plane and the direction vector of the given line. By using the point-slope form of the line equation, we can then write the parametric equations.

The given plane has the equation x + y + z = 2. The normal vector of the plane is (1, 1, 1), as the coefficients of x, y, and z represent the normal vector components. We also have a line for which we want to find a line parallel to the plane and perpendicular to it. To determine the direction vector of the line, we take the cross product of the normal vector of the plane and the direction vector of the given line.

Let's assume the direction vector of the given line is represented by vector v = (a, b, c). Taking the cross product of (a, b, c) and (1, 1, 1) will give us the direction vector of the line parallel to the plane and perpendicular to the given line.

Next, we can write the parametric equations for the line using the point-slope form. Since we have the point P(1, 4, 5) on the line and the direction vector obtained from the cross product, we can express the equations as follows:

x = 1 + at

y = 4 + bt

z = 5 + ct

where t is a parameter that varies along the line. These equations represent the parametric equations for the line passing through point P(1, 4, 5) that is parallel to the plane x + y + z = 2 and perpendicular to the given line.

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The equation of the function is:

D(t) = 1.85 sin(2π/12.4(t - 6.2)) + 4.55

What is sinusoidal function?

A sinusoidal function is a type of function that represents a periodic oscillation, such as the motion of a pendulum or the wave-like behavior of sound or light. The most common type of sinusoidal function is the sine function, which is defined by the equation:

y = A sin (ωx + φ) + k

Given that the depth of the water is a sinusoidal function of time with a period of 1/2 a lunar day, which is about 12 hours and 24 minutes, we can write the equation of the function as:

D(t) = A sin(2π/12.4(t - t0)) + C

where D(t) is the depth of the water at time t, A is the amplitude of the function, t0 is the phase shift, and C is the vertical shift.

To find the amplitude of the function, we need to find the difference between the maximum and minimum depths of the water. The maximum depth occurs at high tide, which we measured to be 6.4 feet, and the minimum depth occurs at low tide, which we measured to be 2.7 feet. Therefore, the amplitude is:

A = (6.4 - 2.7)/2 = 1.85 feet

To find the phase shift, we need to find the time at which the function reaches its maximum depth. Since the low tide occurred at 3:18 A.M. and the period of the function is 12 hours and 24 minutes, we know that the maximum depth occurred 6 hours and 12 minutes later, at 9:30 A.M. Therefore, the phase shift is:

t0 = 6.2 hours

Finally, to find the vertical shift, we can take the average of the maximum and minimum depths:

C = (6.4 + 2.7)/2 = 4.55 feet

Putting it all together, the equation of the function is:

D(t) = 1.85 sin(2π/12.4(t - 6.2)) + 4.55

This equation can be used to predict the depth of the water at any time between low and high tide.

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Answer:

180 seconds

Step-by-step explanation:

To convert from minutes to seconds, multiply by 60.

⇒  S = 3 × 60

⇒ S = 180 seconds

Hope this helps! :D

Answer:

70

Step-by-step explanation:

A sensible original hypothesis that suggests a positive relationship between two variables could be: "Hypothesis: Increased physical exercise is positively associated with improved cardiovascular health."

The hypothesis suggests that there is a positive relationship between increased physical exercise and improved cardiovascular health. This means that as the level of physical exercise increases, it is expected to result in an improvement in cardiovascular health.

To explain further, the hypothesis is based on the understanding that physical exercise has various beneficial effects on the cardiovascular system. Regular exercise can lead to improvements in heart function, increased blood flow, lower blood pressure, improved cholesterol levels, and better overall cardiovascular fitness.

By proposing this hypothesis, we are suggesting that individuals who engage in more physical exercise will experience greater improvements in their cardiovascular health compared to those who engage in less or no exercise. This hypothesis can be tested through research studies, where data on exercise habits and cardiovascular health measures are collected and analyzed to determine if a positive relationship exists between the variables.

It is important to note that while the hypothesis suggests a positive relationship, further research is needed to provide concrete evidence and establish a causal link between increased physical exercise and improved cardiovascular health.

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Each item costs: 5.50 for a popcorn, 1.90 for a soda, and 2.50 for a hotdog.

An algebraic expression is the combination of numbers and variables in expressing and solving a particular mathematical question.

Let x = cost of a hotdog.

If popcorn costs 3 more than a hotdog, then

3 + x = cost of a popcorn.

If a soda costs 0.60 less than a hotdog, then

x - 0.60 = cost of a soda.

If a popcorn, a soda, and a hotdog at the movies is 9.90, then

(3 + x) + (x - 0.60) + x = 9.90

Simplify the equation and solve for the value of x.

(3 + x) + (x - 0.60) + x = 9.90

3 + x + x - 0.60 + x = 9.90

3x = 9.90 - 3 + 0.60

3x = 7.50

x = 2.50

cost of a hotdog = x = 2.50

cost of a popcorn = 3 + x = 3 + 2.50 = 5.50

cost of a soda = x - 0.60 = 2.50 - 0.60 = 1.90

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Answer:

49.0197m

Step-by-step explanation:

The formula is d = c / π, allow d to be diameter and c to be circumference

Answer:\(\frac{2}{3}\)

Step-by-step explanation:

because the denominators (the numbers on the bottom) dont match we'll have to multiply both numbers top and bottom by three to match the denominators

 \(\frac{1(3)}{2 (3)}\)  = \(\frac{3}{6}\)

now that our denominators are matching we can add the numerators

so 1/6 + 3/6 = 4/6 or 2/3

Given the equation:

Then, expanding and operating this equation leads to:

There are no quadratic terms, so the equation is linear. Now, converting it to standard form:

Answer:

-6 + 2 -3

= -7

Step-by-step explanation:

I would take brainliest

Answer:

I think it is true

Step-by-step explanation:

F(x) = x! × x² - 2² + 3²

F(5) = 5! × 5² - 2² + 3²

F(5) = 120 × 25 - 4 + 9

F(5) = 3.000 - 4 + 9

F(5) = 2.996 + 9

F(5) = 3.005

I hope this helps

Yes, The entry in the 4th row and 5th column of A4 is 1, which means there is a walk of length 4 from vertex 4 to vertex 5 in graph G.

The given adjacency matrix A has 5 rows and 5 columns. The entry in row i and column j represents the edge between vertices i and j. For example, A[1][2] = 1, which means there is an edge from vertex 1 to vertex 2.

To find whether there is a walk of length 4 from vertex 4 to vertex 5 in graph G, we need to examine the entry in the 4th row and 5th column of the matrix A4.

However, we are only given the matrices A, A2, and A3, but not A4. We can calculate A4 using matrix multiplication, specifically by multiplying A3 and A:

A4 = A3 x A

Multiplying A2 by A, we get A3:

A3 = A2 x A

Substituting A3 in the formula for A4, we get:

A4 = (A2 x A) x A

To find the entry in the 4th row and 5th column of A4, we calculate the dot product of the 4th row of A2 and the 5th column of A:\

A2[3][0] x A[0][4] + A2[3][1] x A[1][4] + A2[3][2] x A[2][4] + A2[3][3] x A[3][4] + A2[3][4] x A[4][4]

Simplifying this expression, we get:

1 x 0 + 0 x 0 + 0 x 0 + 1 x 1 + 0 x 0 = 1

Therefore, the answer to the question is yes.

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Complete Question:

A directed graph G has 5 vertices, numbered 1 through 5. The 5 x 5 matrix A is the adjacency matrix for G. The matrices AP and As are given below.

0 1 0 0 0 0 0 0 0 A2 0 0 0 0 0 0 1 0 1 0 1 1 1 1 0 1 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 1 0

Use the information given to answer the questions about graph G.

(a) Is there a walk of length 4 from vertex 4 to vertex 5 in G?

Answer:

18 minutes for John to climb 45 steps.

Step-by-step explanation:

30/12 = 45/x

30x = 540

18

Answer:

.....................

Answer:

The symbol 'n,' represents the total number of individuals or observations in the sample.

Answer:

The principal quantum number, n, describes the energy of an electron and the most probable distance of the electron from the nucleus. In other words, it refers to the size of the orbital and the energy level an electron is placed in. The number of subshells, or l, describes the shape of the orbital.

Using proportions, it is found that:

A proportion is a fraction of a total amount, and the measures in the context of a problem are found using basic arithmetic operations such as multiplication and division.

One application of proportions is for ratio problems, as fractions are built from the ratios to find the equivalent amounts.

Caleb noticed that for every 10 orders of cheese pizza there were 7 orders of pepperoni pizza, 5 orders of sausage pizza and 8 orders of mushroom pizza, hence the fraction of Pepperoni pizzas out of the total is given by:

Pepperoni = 7/(10 + 7 + 5 + 8) = 7/30 of the total.

If 35 pepperoni pizzas were ordered, the total number is found as follows:

7x/30 = 35

7x = 30 x 35

x = 30 x 5

x = 150 pizzas.

2 out of every 25 pizzas were burned, hence the number of burned pizzas is given by:

2/25 x 150 = 2 x 6 = 12 pizzas.

The cheese fraction is given by:

10/30.

Hence, out of 360 pizzas, the number is given by:

10/30 x 360 = 10 x 12 = 120 cheese pizzas

The mushroom fraction is given by:

8/30.

Hence, out of 360 pizzas, the number is given by:

8/30 x 360 = 8 x 12 = 96 mushroom pizzas

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Answer:

(8,2)

Step-by-step explanation:

Set up the equation like this: x+x-6=10. You filled in x-6 for y because the second equation says y=x-6. When you solve, you add 6 to both sides of the equation (this is the addition property of equality in geometry). You now have x+x=16. Now, you can combine like terms (this would be the proof combine like terms in geometry) and you would be able to combine like terms because each of those x's are truely 1x+1x because a variable without a coefficient (the number in front of the variable) is an understood 1. So, (1)x+(1)x=2x. So, you have 2x=16. Now, divide by 2 on each side to get that x alone. This is the division property of equality in geometry. You find x=8. You now have the point (8,y) Now to find the y, plug in the 8 for x in one of the equations. If you plug it into the equation x+y=10 you get 8+y=10. Now subtract 8 from both sides (Subtraction property of equality in geometry). y=2. You get the same answer if you plug in 8 for the other equation. y=8-6. 8-6 is 2. Hope this helps!  :)

Answer:

1

Step-by-step explanation:

The factors of 87 are 87, 29, 3, 1.

The factors of 47 are 47, 1.

The common factors of 87 and 47 are 1, intersecting the two sets above.

In the intersection factors of 87 ∩ factors of 47 the greatest element is (1).