Question 7 (1 point)
Suppose that a normal distribution has a mean of 20 and a standard deviation of 4.
What is the s-score of 13

Answers

Answer 1

Answer:

-1.75

Step-by-step explanation:

The z-score = (n - m) / d  where n is the value (13) m = mean and d = standard deviation.

= (13 - 20) / 4

= -1.75  (answer)


Related Questions

I neeed help plz 30 points

Quadrilateral NATS has coordinates N(-4, -3), A(1, 2), T(8, 1), and S(3, -4). Prove that quadrilateral NATS is a rhombus. Give your statement with the equal distances. Remember to identify the sides.

Answers

Answer:

Step-by-step explanation:

NA = √[(- 4 - 1 )² + (- 3 - 2)²] = 5√2

AT = √[(8 - 1 )² + (1 - 2)²] = 5√2

TS = √[(3 - 8 )² + (- 4 - 1)²] = 5√2

NS = √[(- 4 - 3 )² + (- 3 + 4)²] = 5√2

NA = AT = TS = NS = 5√2

[tex]m_{NA}[/tex] = (- 3 - 2) / (- 4 - 1) = 1 ........ (1)

[tex]m_{TS}[/tex] = (- 4 - 1) / (3 - 8 ) = 1 ......... (2)

From (1) and (2) ⇒ NA║TS

[tex]m_{AT}[/tex] = ( 1 - 2) / ( 8 - 1) = - 1 / 7 .......... (3)

[tex]m_{NS}[/tex] = ( - 4 + 3) / ( 3 + 4) = - 1 / 7 .... (4)

From (3) and (4) ⇒ AT║NS

Thus, NATS is rhombus.

Jim is twice as old as Pam. The difference between their ages is 12 years. How old is Jim?

Answers

Answer:

24

Step-by-step explanation:

12 x 2 = 24

12 + 12 = 24

Answer:

The answer for the question is eight

can someone help me plsssss :( 20 ᴘᴏɪɴᴛs !

Answers

a.) m = -1

b.) m = 0

c.) m = undefined

d.) m = 1/2

Answer (bolded part is slope):

a.) y = -x + 2 (slope = -1)

b.) y = -2 (slope = 0)

c.) x = 3 (slope = undefined)

d.) y = [tex]\frac{2}{3}[/tex]x + [tex]\frac{3}{2}[/tex] (slope = 2/3)

Find the x-intercept of each line defined below and compare their values.

Answers

x intercept of line a is (-6,0)

x intercept of line b is (1,0)

The x intercept of line A is (-6, 0) and  x intercept of line B is (3, 0)

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

Equation of line A

y=-2/3x-4

When y=0

0=-2/3x-4

4=-2/3x

-6=x

So the x intercept for line A is -6.

Let us find equation of line B by using table

Slope = -1

Now let us find y intercept

2=-1(-1)+b

b=3

So equation is y=-x+3

Now let us find the  x intercept

Put y=0

0=-x+3

x=3

(3, 0) is x intercept of line B

Hence, the x intercept of line A is (-6, 0) and  x intercept of line B is (3, 0)

To learn more on slope of line click:

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Describe 3 types of maps

Answers

Answer:

population-amount of people per sq ft

climate- the average climate in that are

physical- elevation, landmarks,

Step-by-step explanation:

Which of the following equations could be used to solve the given equation?
9x + 26 + 7x - 17 = 2x + (-3x) + 5x
16x + 9 = 4x
16x + 11 = 4x
16x + 9 = 0

Answers

Answer:

16x + 9 = 4x

Step-by-step explanation:

9x+7x+26-17=2x-3x+5x
16x+9=4x

Which represents a function? Edge 2020.

Answers

The data set {(-8,-2),(-4,1),(0,-2),(2,3),(4,-4)} represents a function because for every distinct input x has only one output y, whereas all the other data sets have at least one point of x in which has two or more outputs of y.

How do you simplify −7(2x−11)

Answers

Answer:

−7(2x−11)

use distributive property

-7(2x)-7(-11)

-14x+77

Answer:

-14x + 77

Step-by-step explanation:

-7(2x-11)

= -14x + 77

(04.02 LC) The graph below shows the numbers of cups of apple juice that are mixed with different numbers of cups of lemon-lime soda to make servings of apple soda: What is the ratio of the number of cups of apple juice to the number of cups of lemon-lime soda? (5 points)

Answers

Answer:

Ratio of the number of cups of apple juice to the number of cups of lemon lime soda is 6 : 1

Step-by-step explanation:

From the graph attached,

Number of cups of apple juice (A) is proportional to the number of cups of lemon lime soda (L).

A ∝ L

A = kL

Here 'k' is the proportionality constant.

k = [tex]\frac{A}{L}[/tex]

  = [tex]\frac{6}{1}[/tex]

Therefore, ratio of the number of cups of apple juice to the number of cups of lemon lime soda is 6 : 1.

Could you form a triangle either side lengths of 1 inch 2 inch and 3 inch

Answers

Answer:

no

Step-by-step explanation:

No, a triangle cannot be constructed with sides of 2 in., 3 in., and 6 in. For three line segments to be able to form any triangle you must be able to take any two sides, add their length and this sum be greater than the remaining side.

Given: TriangleSTU with Line segment S T is parallel to line segment X Y Prove: StartFraction S X Over X U EndFraction = StartFraction T Y Over Y U EndFraction Triangle S T U is cut by line segment X Y. Line segment X Y goes from side U S to side U T. Angle U Y X is 1, angle Y X U is 3, angle U T S is 2, and angle T S U is 4. Complete the steps of the proof. ♣: ♦:

Answers

Answer:

1:C Triangle STU is similar to triangle XYU

2:B subtraction property

Step-by-step explanation:

i just did the test

Applying the AA similarity theorem, the missing parts of the proof are:

Triangle STU is similar to triangle XYUSubtraction property

What is the AA Similarity Theorem?

According to the AA similarity theorem, if two triangles have two corresponding congruent angles, then both triangles are similar.

In the proof given, triangles STU and XYU have two pairs of corresponding angles that are congruent, therefore, triangle STU is similar to triangle XYU by AA similarity theorem.

Also, subtraction property was applied in the proof. Thus, the missing parts of the proof are:

Triangle STU is similar to triangle XYUSubtraction property

Learn more about the AA similarity theorem on:

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Graph f(x)=−1.5x+6.

Use the line tool and select two points to graph the line.

Answers

Answer: Points (-1 , 7.5), (0 , 6), and (1 , 4.5).

Step-by-step explanation:

Log2(x-3)+log2x-log2(x+2)=2

Answers

We are given the equation:

log₂(x-3) + log₂x - log₂(x+2) = 2

When is it defined:

in this equation, log₂(x-3) and log₂(x+2) can only be defined when

x-3 >0 and x+2 > 0

solving for the values of x, we get:

x > 3    and   x > -2

which basically means x > 3

Because we are looking for an inequality which is true for both x>-2 and x>3

Hence, x will have a value greater than 3

Solving for x:

using the product rule [logₐb + logₐc = logₐ(bc)]

log₂[(x-3)(x)] - log₂(x+2) = 2  

using the quotient rule [logₐb - logₐc = logₐ(b/c)]

log₂[(x-3)(x) / (x+2)] = 2

from the property [ aˣ = b  ⇒  logₐb = x]

(x² - 3x) / (x+2) = 2²

x² - 3x = 4x + 8

x² - 7x - 8 = 0

x² + x - 8x - 8 = 0

x(x+1) - 8(x+1) = 0

(x-8)(x+1) = 0

(x-8) = 0    OR    (x+1) = 0

x = 8      OR      x = -1

We know that the equation is defined only for x > 3

We can see that x = 8 satisfies that inequality

Therefore, x = 8

HELP PLS A carnival charges $2.50 per ride after an entrance fee.You paid a total of $22.50 after 6 rides.Find the total cost for 15 rides.

Answers

The cost of the entrance would be 7.5$, because 2.50$ x 6 equals 15.

Let’s multiply 6 x 2 to get twelve, and if six rides are 15$, that would be 30$ for twelve rides. But we still have three more.

2.50 x 3 would be 7.5$, and if we add that to 30$, we would get 37.5$.

With entry fee though, we would add 37.5$ to
7.5$, and so it would be 45$ on the dot.

Your answer would be 37.5$ without entry fee, and 45$ with entry fee.

If this helped.. please do me a favor and mark this as the Brainliest! :))

You are given $90 for lunches for a month. You spend some of the money the
first day and you spend $23 the second day. If you have $59 for the rest of the
month to spend on lunch, how much did you spend the first day?

Answers

Answer: 8 dollars

Step-by

Factor by Grouping
2y2 + 7yz + 5z2

Answers

Here you go! Hope this helps

Ashley can run 12 miles in 2 hours. At this rate, how many minutes does it take Ashley to run 1 mile?

Answers

Answer:

10 minutes

Step-by-step explanation:

If you divide both sides by 2 you get 6 miles and 1 hour.

Divide it again by 2 and you get 3 miles and 30 minutes.

Divide that by 3 and you get 1 mile in 10 minutes.

It takes 10 minutes for Ashley to run 1 mile.
12 miles / 12 miles = 1 mile
2 hours equals 120 minutes
120 minutes / 12 miles = 10 minutes per mile

0.34 percent and decimal

Answers

if you are asking for the percent of .34, it is 34%, but i am not sure of the question

Answer:

0.0034

Step-by-step explanation:

Find the distance between the points (-8, -8) and (16, -8)

Answers

Answer:

24

Step-by-step explanation:

Use the distance formula, d = sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}. Using this you then get 24.

Find the general solution of the given system. Use a computer system or graphing calculator to construct a direction field and typical solution curves for the system

Answers

Answer:

hello your question is incomplete attached below is the complete question and solution

answer :  general solution ( X ) = [tex]C_{1} e^{3t} \left \{ {{1} \atop {-1}} \right. + C_{2} e^{3t} \left \{ {{1} \atop {-1}} \right.[/tex]

Step-by-step explanation:

attached below is the detailed solution to determine the general solution of the given system

general solution ( X ) = [tex]C_{1} e^{3t} \left \{ {{1} \atop {-1}} \right. + C_{2} e^{3t} \left \{ {{1} \atop {-1}} \right.[/tex]

The sum of two numbers is 50. If one of the numbers is twice of the other, then what is the
difference of the numbers?​

Answers

Answer:

Step-by-step explanation:

Given

The sum of two numbers = 50.

one of the numbers is twice of the other

Let one number =X

So second number=2x

Sum of two number =50

X+2X=50

3X=50

X=50/3

9ne no is X=50/3

Other is 2x= 100/3

difference of the number=100/3-50/3

=50/3.

EASY MATH!! Find value of these expressions without using calculator!

Answers

Answer: 1, -1, 1, -1

Step-by-step explanation:

if it the power is odd and there is parenthesis the answer will be negative. If it is even then the answer will be positive

Answer:1, -1, 1, -1

Step-by-step explanation:

Even power results in positive for negative numbers, odd power results in negative for negative numbers

What is the solution set of \ x|x<-3\ cap\ x|x>5\ ?

Answers

Answer:

Let set A = {x|x<-3}

Let set B = {x|x>5}

The solution for set A could be graphically represented with a number line that contained an unshaded circle surrounding the integer -3 and all values to the left or less than -3 would be shaded.

The solution for set B could be graphically represented with a number line that contained an unshaded circle surrounding the integer 5 and all values to the right of 5 or greater than 5 would be shaded.

If you placed the two number lines close to each other, you would see that they do not intersect.

Thus there is no solution for the intersection of set A and set B as defined in the given problem.

Step-by-step explanation:

sneakychickens please help​

Answers

i believe the answer is 48.

Answer:

16

Step-by-step explanation:

First I plugged in the values like [tex](-2)^{2} |6-(3(-2))|[/tex]

Then I Solved [tex](-2)^{2}[/tex] and got 4

Than I multiplied 3 by -2 and got -6

Now the equation looks like 4|6-(-6)| which will now be 4|6+6|

then add 6 and 6 together and you get 12 now you add 4 and 12 together and you get your answer 16

Hope this helps

whats 2+2 brainliest

Answers

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

mrs. wilkerson cut some oranges into 20 equal pieces to be shared by 6 friends how many pieces did each person get and how mant pieces were left over

Answers

Answer:

Each friend would get 3 slices and there would be 2 slices left over.

You buy a book for $12 and a CD for $6. You hand a sales cleck a $20. How much change should you get back?

Answers

Answer:

20-12-6=2

Step-by-step explanation:

why is this in college math bruh

Answer:

You should get $2 in change

Step-by-step explanation:

Find all solutions to the system:
5x-3y=2,
15x+6y=6

Answers

Answer:

2/5   0

Step-by-step explanation:


Anyone???

Mathematics

Answers

The slope is rise over run
The rise is 1
The run is 2
So the slope would be 1/2

1. Solve 2x < 10. Explain how to find the solution set. I need help with this question.

Answers

x > 5

Explanation: When you divide/multiply an inequality, you ALWAYS flip the sign.
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