Please answer I will Mark brainliest

On solving the question - Use the z distribution if the population variances are known; if not, use the -tdf distribution.

A measure of the distribution of a set of data points is called population variance. It measures the mean squared departure from the mean, specifically. As a result, the variance will be minimal if all of the data points are very near to the mean. The variation will be high if the data points are dispersed throughout a wide range.

The difference between the mean and the mean squared is known as the variance, and the standard deviation is the square root of that difference. Although in different units, both measurements capture the distribution's variability. The same units are used to express standard deviation and the original value.

Use the z distribution if the population variances are known; if not, use the -tdf distribution.

To know more about population variance visit:
https://brainly.com/question/13708253

#SPJ4

The center and the radius of the new circle are (h, k) = (- 13, - 8) and r = 14.

According to the image set aside, we get the equation of a circle in standard form, whose features are summarized in the following equation shown below:

(x - h)² + (y - k)² = r²      (1)

Where:

The coordinates of the new center is obtained by apply the translation formula:

(h, k) = (- 10, - 8) + (- 3, 0)

(h, k) = (- 13, - 8)

And the radius is enlarged by dilation:

r = 7 · 2

r = 14

Therefore, the center and the radius of the new circle are (h, k) = (- 13, - 8) and r = 14.

To learn more on circles: https://brainly.com/question/11833983

#SPJ1

The length of yards of wallpaper border for the rectangular bathroom you need is  5.96 yd.

A rectangle is a shape with four sides and four right angles, or 90 degree angles. A parallelogram, or rectangle, is a shape with two sets of opposite sides which are parallel. A rectangle is a shape having four sides and 4 right angles (90-degree angles).

Given their versatility, rectangles are excellent forms. Rectangles are frequently used in patterns and motifs in brick fireplaces and floor tiles even though their right angles blend well with those of other shapes and rectangles.

For question:

rectangular bathroom has the dimensions:

perimeter = 2(l + x)

perimeter = 2(1.98 + 1)

perimeter = 2*2.98

perimeter = 5.96 yd

Thus, the length of yards of wallpaper border for the rectangular bathroom you need is  5.96 yd.

Know more about the rectangle

https://brainly.com/question/2607596

#SPJ1

Complete question is attached.

Answer:

Dollars per passenger would be $252.
The maximum revenue is $63,404.

Step-by-step explanation:

Let's define the number of passengers above 212 as x.

The revenue function is given by R(x) = (212 + x)(292 - x).

We can expand and simplify the revenue function:

\(R(x) = 212 * 292 + 212 * (-x) + x * 292 + x * (-x)\)

= \(61804 - 212x + 292x - x^2\)

= \(-x^2 + 80x + 61804\)

The revenue function is a quadratic function in the form\(R(x) = -x^2 + 80x + 61804\), representing a downward-opening parabola.

To find the x-coordinate of the vertex (which gives the number of passengers for maximum revenue), use the formula \(x = -b/2a\), where \(a = -1\) and \(b = 80\).

\(x=\frac{-80}{2*(-1)}\)

\(= \frac{80}{2}\)

\(= 40\)

Therefore, the number of passengers above 212 for maximum revenue is 40.

Substitute x = 40 into the revenue function to find the maximum revenue:

\(R(x) = -(40)^2 + 80(40) + 61804\)

\(= -1600 + 3200 + 61804\)

\(= 61804 + 1600\)

\(= 63404\)

Hence, the maximum revenue is $63,404.

To determine the fare per passenger, subtract x from the base fare of $292:

Fare per passenger = Base fare - x

\(= 292 - 40\)

\(= 252\) Dollars per passenger.

The component form of the following vectors is Option A. V = (38.3, 32.1).

To find the component form of a vector given its magnitude and direction angle, we can use trigonometry.

The component form of a vector in two dimensions is represented as (x, y), where x is the horizontal component and y is the vertical component.

In this case, the magnitude of the vector is given as 50, and the direction angle θ is 50°. We can use this information to calculate the horizontal and vertical components.

The horizontal component (x) can be found using the formula x = magnitude * cos(θ), and the vertical component (y) can be found using y = magnitude * sin(θ).

Let's calculate the components:

x = 50 * cos(50°) ≈ 38.3

y = 50 * sin(50°) ≈ 32.1

Rounding the answers to the nearest tenth, we get the component form of the vector V as (38.3, 32.1).

Therefore, the correct answer is A. V = (38.3, 32.1).

Know more about the vectors here:
https://brainly.com/question/30854499

#SPJ8

The question is incomplete. Find the full content below:

Find the component form of the following vectors. Round your answers to the tenth.

Magnitude of v = 50, direction angle θ = 50°

A. V = (38.3, 32.1)

B. V = (33.8, 31.2)

C. V = (32.1, 38.3)

D. V = (31.2, 33.8)

Step-by-step explanation:

7/ 12 is equivalent to - 7/-12

Answer:

17.32

Step-by-step explanation:

since there is a 5 in the thousandths, we round the 1 in the hundredths up and get 17.32

The total number of possible points in the class according to the task content is; 341.1 points.

It follows from the task content that the total number of possible points in the class can be determined as follows;

Since the A grade was missed by 5 points, It follows that the points required for an A is; 5+ 302 = 307 points.

Hence, since 307 is 90% of A; then;

(90/100) × Total = 307

Total = 307/0.9

Total = 341.1

Read more on percentages;

https://brainly.com/question/16865197

#SPJ1

The correct answer is option (b) The vertical distance between the point at -7 feet and sea level (0 feet)

What is elevation?

The elevation is the height of an object or point above a given reference point, usually sea level. It is often used to describe the height or altitude of a geographic location, such as a mountain peak or a city, and is commonly measured in feet or meters.

In the context of elevation, | -7 | feet would mean the vertical distance between the point at -7 feet and sea level (0 feet).

The vertical distance between two points is calculated by taking the absolute value of the difference between their elevations. So, in this case, the absolute value of -7 is 7, which means the point is 7 feet below sea level.

The correct answer is option (b) The vertical distance between the point at -7 feet and sea level (0 feet).

To know more about elevations visit:

brainly.com/question/31361033

#SPJ1

Answer:

m > 9

Step-by-step explanation:

-8m<-72

Divide each side by -8, remembering to flip the inequality

-8m/-8>-72/-8

m > 9

Answer:

210000000

Step-by-step explanation:

Answer:

you need to use the before change and after method.

Answer:

angle 8 is congruent to angles 3, 6, and 1

Step-by-step explanation:

If n and q are parallel then corresponding and vertical angles would be congruent. So: angle 8 is congruent to angles 3, 6, and 1.

x = 301/56

Algebra is the branch of mathematics that deals with numbers and values which are represented with letters and symbols.

Sometimes, we do not want to mention a particular number, we can represent the number by a letter or a suitable symbol. This approach is algebraic.

For example, d + d = 2d

This is an example of an algebraic expression

Given the algebraic expression,

\(3\frac{1}{8} \div (x - 4 \frac{7}{28} ) = \frac{17}{18} + 1 \frac{5}{6} \)

Step 1:

Simplify the expression by converting the mixed numbers into improper fractions:

25/8 ÷ ( x - 119/28) = 17/18 + 11/6

Step 2: Simplify the right side of the equation

25/8 ÷( x - 119/28) = 17/18 + 33/18

25/8 ÷( x - 119/28) = 50/18

Step 3: Multiply both sides of the equation by (x - 119/28)

25/8 = 50/18 × (x - 119/28)

Step 4: Multiply both sides of the equation by (18/50)

25/8 × (18/50) = (x - 119/28)

Step 5: Simplify the left side of the equation

9/8 = (x - 119/28)

Step 6: Add 119/28 to both sides of the equation

9/8 + 119/28 = x

Step 7: Calculate the value of x:

x = 9/8 + 119/28

= 63/56 + 238/56

= 301/56

Learn more about algebraic expressions from:https://brainly.com/question/395066

#SPJ1

To rewrite the expression -2(n-7) using the distributive property, we need to distribute the -2 to both terms inside the parentheses. The distributive property states that for any numbers a, b, and c:

a(b + c) = ab + ac

Applying this property to the given expression:

-2(n-7) = -2 * n + (-2) * (-7)

Simplifying further:

-2(n-7) = -2n + 14

Therefore, the rewritten expression is -2n + 14.

Answer:

3

Answer:

Step-by-step explanation:

3x² - 22x + 34 = -1

I wouldn't factor it at all. The Quadratic Formula always works, and there 's no guessing.

Quadratic formula

x = [22 ± √(22² – 4·3·35)] / [2·3]

 = [22 ± √64] / 6

 = [22 ± 8] /6

 = 7/3, 5

Answer: x = 12

Step-by-step explanation:

You're on the right track! You're right in saying that each angle has to be 60 degrees since they're supposed to add up to 180. However, the question is asking what x equals, so we set up the equation:

5x = 60

x = 12

Step-by-step explanation:

the slope perpendicular to y= ¾x is

-1 ÷ ¾ = -4/3

so the equation :

y-(-3)= -4/3(x-3)

y+3= -4/3x +4

y = -4/3x +4-3

y = -4/3x + 1

Answer:

5.236, 5.235

Step-by-step explanation:

ya just round em up

The value of x is found to be 3 and the arithmetic sequence is found to be 4, -2, -8, ... .

What is arithmetic sequence?

The nth term of an arithmetic progression is determined using the arithmetic sequence formula. The series where the common difference between any two next words stays constant is known as an arithmetic sequence.

The arithmetic sequence is 3x - 5, x - 5, 2x - 14, ....

If the numbers are in an arithmetic sequence, then the difference between the first and second term must be the same as the difference between the second and third term.

(x - 5) - (3x - 5) = (2x - 14) - (x - 5)

x - 5 - 3x + 5 = 2x - 14 - x + 5

-2x = x - 9

-2x - x = -9

-3x = -9

x = 3

The first three terms can be obtained by substituting the value of x in the terms -

The first term - 3(3) - 5 = 4

The second term - 3 - 5 = -2

The third term = 2(3) - 14 = -8

Therefore, the arithmetic sequence is 4, -2, -8, .....

To learn more about arithmetic sequence from the given link

https://brainly.com/question/6561461

#SPJ1

a.

b. The average acceleration of the car between 6.0 and 8.0 seconds is 15.0 m/s²

Average acceleration is the rate of change of velocity with time.

From the graph, we know that the gradient of each section is the acceleration of the car in each section.

For each section, we have the condition

The average acceleration a = (v₂ - v₁)/(t₂ - t₁) where

So, substituting the values of the variables into the equation, we have

a = (v₂ - v₁)/(t₂ - t₁)

a = (45.0 m/s - 15.0 m/s)/(8.0 s - 6.0 s)

a = (30.0 m/s)/(2.0 s)

a = 15.0 m/s²

So, the acceleration is 15.0 m/s²

Learn more about average acceleration here:

https://brainly.com/question/28850590

#SPJ1

The rounded off answers for the area of the rectangles are as follows: 1) 24,000, 2) 42,000, 3) 31,200, 4) 31,200.

Rounding of a number is a mathematical process of approximating a given number to a specified level of accuracy or precision. Rounding is done to make numbers easier to work with or to communicate, especially when the number has many decimal places or digits.

The process of rounding involves changing a number to a nearby value that is easier to use or communicate, while still retaining its approximate value. The number is rounded to a certain number of decimal places or significant digits, depending on the required level of accuracy.

1. 5 x 4751 ≈ 5 x 4800 = 24,000.

To check the answer, we can estimate 4751 as 4800, and then multiply 5 by 4800 to get the approximate product of 24,000.

2. 7 x 6000 = 42,000.

To check the answer, we can simply multiply 7 by 6000 to get the product of 42,000.

3. 6 x 5214 ≈ 6 x 5200 = 31,200.

To check the answer, we can estimate 5214 as 5200, and then multiply 6 by 5200 to get the approximate product of 31,200.

4. 8 x 3867 ≈ 8 x 3900 = 31,200.

To check the answer, we can estimate 3867 as 3900, and then multiply 8 by 3900 to get the approximate product of 31,200.

To know more about significant digits, visit:

https://brainly.com/question/1658998

#SPJ1

The following are the scaled off results for the rectangles' area:: 1) 24,000, 2) 42,000, 3) 31,200, 4) 31,200.

The mathematical process of approximating a given number to a predetermined degree of accuracy or precision is known as rounding. In particular when a number has numerous decimal points or digits, rounding is done to make numbers simpler to work with or communicate.

In order to make a number simpler to use or communicate, a number is rounded to a more manageable value while retaining its general meaning.

Depending on the necessary level of accuracy, the number is rounded to a particular number of significant digits or decimal places.

1. 5 x 4751 ≈ 5 x 4800 = 24,000.

To verify the result, we can convert 4751 to 4800, then increase 5 by 4800 to obtain a result that is roughly 20,000.

2. 7 x 6000 = 42,000.

We can quickly multiply 7 by 6000 to obtain the result of 42,000 to verify the solution.

3. 6 x 5214 ≈ 6 x 5200 = 31,200.

By converting 5214 to 5200 and multiplying that number by 6, we can approximate the solution to be 31,200.

4. 8 x 3867 ≈ 8 x 3900 = 31,200.

To verify the solution, we can convert 3867 to 3900 and multiply 8 by 3900 to obtain a result that is roughly 31,200.

To know more about significant digits, visit:

brainly.com/question/1658998

#SPJ1

Answer:

  see attached

Step-by-step explanation:

You want the graph of the circle defined by the equation ...

  (x-2)^2 + (y-7)^2 = 4.

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

  (x -h)² +(y -k)² = r²

Comparing this to the given equation, we see ...

  h = 2, k = 7, r² = 4

Then r = √4 = 2.

The circle will have its center at (2, 7) and will have a radius of 2. It is shown in the attached graph.

<95141404393>

Answer:

1/6

Step-by-step explanation:

2/3*1/4

=2/12

=1/6

PLS GIVE BRAINLIEST

Answer:

The circumference of the drive wheel is 10 feet * 3.14 = 31.4 feet.

The circumference of the vat is 18 feet * 3.14 = 56.52 feet.

The total length of belt needed to go around the drive wheel and the vat is 31.4 + 56.52 = 87.92 feet.

Answer: Volume of the given shape is, 147 yards.

Step-by-step explanation:

Volume is the amount of space in a certain 3D object.

The given figure is a rectangular prism with a length of 7yd, width of 7yd, and height (depth) of 3 yd.

You can multiply those values L x W x H, to get the volume:

7yd x 7yd x 3yd = 147 yd

Answer:

the probability that the coin is tails and he draws a blue marble is 1/6.

Step-by-step explanation:

Let event A be "the coin is tails" and event B be "he draws a blue marble".

The probability of event A is 1/2, since there are two equally likely outcomes when flipping a coin.

The probability of event B given event A has occurred is 1/3, since there is one blue marble out of three marbles when the coin is tails.

Therefore, the probability of both events happening, the coin is tails and he draws a blue marble, is the product of their probabilities:

P(A and B) = P(A) x P(B | A)

P(A and B) = (1/2) x (1/3)

P(A and B) = 1/6

Therefore, the probability that the coin is tails and he draws a blue marble is 1/6.

Segments MS and QS are therefore congruent by the definition of bisector. Therefore, the correct answer option is: D. MS and QS.

In Mathematics and Geometry, a perpendicular bisector is a line, segment, or ray that bisects or divides a line segment exactly into two (2) equal halves and forms an angle that has a magnitude of 90 degrees at the point of intersection.

This ultimately implies that, a perpendicular bisector bisects a line segment exactly into two (2) equal halves, in order to form a right angle that has a magnitude of 90 degrees at the point of intersection.

Since line segment NS is a perpendicular bisector of isosceles triangle MNQ, we can logically deduce the following congruent relationships;

Read more on perpendicular bisectors here: brainly.com/question/19154899

#SPJ1

Complete Question:

The proof that ΔMNS ≅ ΔQNS is shown. Given: ΔMNQ is isosceles with base MQ, and NR and MQ bisect each other at S. Prove: ΔMNS ≅ ΔQNS

We know that ΔMNQ is isosceles with base MQ. So, MN ≅ QN by the definition of isosceles triangle. The base angles of the isosceles triangle, ∠NMS and ∠NQS, are congruent by the isosceles triangle theorem. It is also given that NR and MQ bisect each other at S. Segments _____ are therefore congruent by the definition of bisector. Thus, ΔMNS ≅ ΔQNS by SAS.

NS and NS

NS and RS

MS and RS

MS and QS

Answer:

12.5%

Step-by-step explanation: