Given a normal distribution with mean M = 8 and σ = 3,

What is the x value corresponding to z = 0.4?

Answers

Answer 1

123

[tex]123 > x = 10 > 6[/tex]


Related Questions

please help me I keep getting the answer wrong





1) Record each of these numbers in expanded notation. The first one is done.

2128 = (2 x 1000) + (1 x 100) + (2 x 10) + (8 x 1) = 2000 + 100 + 20 + 8

4629 =

8338 =​

Answers

Answer:

4629= (4×1000)+(6x100)+(2x10)+(9×1)=4000+600+20+9

8338=(8 x 1000)+ (3x100)+(3×10)+(8x1)=8000+300+30+8

Step-by-step explanation:

separate each number and multiply by the place its in

5th p

5th 5248987 5th 5668746i89

10. One contestant on a game show has
1,500 points and another contestant has
-250 points. What is the difference
between the scores of the contestants?

Answers

1750.
it's the difference between 1500 and -250, so simply add the two.
think about it like this:
one number is lower than zero, so you already have the 1500 minimum for a difference. but it isn't bang on zero, it's 250 less than that. so the answer is 1750.

Ian​'s car can go 217 miles on 7 gallons of gas. During a drive last​ weekend, Ian used 8 gallons of gas. How far did he ​drive? Use pencil and paper. Explain how the problem changes if you were given the distance Ian drove last weekend instead of how much gas he used.

Answers

Answer:

165 miles

Step-by-step explanation:

part 1

231/7=33mpg

33×5 =165 miles

part 2

distance/mpg= gas used

for example: if you were told he went 200 miles,

200/33= 6.06 gallons of gas

Why can we consider the sample mean in random samples of size n from a given population to be a random variable?.

Answers

The sample mean is indeed a random variable because the value of the sample mean depends on the characteristics of the specific random sample. The sample size multiplied by the population mean yields the expected value of the sample sum.


What is random?
The lack of pattern or predictability in events, whether it be apparent or real, is referred to as randomness. Sometimes there is no order or discernible pattern or combination in a random series of events, symbols, or processes.


What is mean?
A collection of two or more numbers' mean is simply their simple mathematical average. There are various methods for calculating the mean for a given collection of numbers, including the arithmetic mean approach, which adds up the series' values, and the geometric mean method, which averages a group of products. The majority of the time, all of the fundamental approaches to calculating a basic average, however, yield the same rough result.

As the population is a huge number and not linear in growth we prefer to take random variable.

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Is this correct? Kinda confused on what to do. (Look at picture)

Answers

Answer:

yes correct . your solution is correct

Answer:

6.5 × 10^9 kg

Step-by-step explanation:

Here is the answer to the question the way it is asked, but the question is ridiculous. 1 kernel of popcorn has a mass of perhaps 1.5 g, so 1.25 g is reasonable. That means 1 kernel has a mass of 0.00125 kg, or 1.25 × 10^-3 kg. To state that 1 kernel of popcorn has a mass of 1.25 × 10^1 means that a kernel of popcorn has a mass of 12.5 kg which corresponds to a weight of approximately 27.6 lb. That is just ridiculous.

Using the ridiculous information given in the problem, then if 1 kernel has a mass of 1.25 × 10^1 kg, then 5.2 × 10^8 kernels have a mass of

(1.25 × 10^1 kg) × (5.2 × 10^8) =

= (1.25 × 5.2) × (10^1 × 10^8) kg

= 6.5 × 10^9 kg

Your number is correct, but don't forget the units.

In your own words, explain the relationship between the graph of a function and the graph of function's derivative.

Answers

Answer:

The derivative of a function in a point is the slope of the graph in that point, so the graph of the function's derivative shows the slope of the function at any point. It is useful because we can say if the function is increasing or decreasing using the graph of the function's derivative. Where the derivative is positive, the graph of the function is increasing and when the derivative is negative, the graph of the function is decreasing.

Given f(x) = (x-7)(x + 4) and g(x) = x + 4, find (f/g)(x)

Answers

X-7 Correct answer for you

how do you make y squared equal 169

Answers

Answer:

13

Step-by-step explanation:

A number squared is a number multiplied by itself.

13 x 13 = 169.

The answer is 13.

Hope this helps!

P.S, Brainliest please! Thanks!

Answer:

[tex]y^{2}[/tex] = 169

Meaning that

[tex]\sqrt{y^2}[/tex]  = [tex]\sqrt{169}[/tex]

Simplify...

y = 13

20/24 equals 45/50 true or false

Answers

[tex]\frac{20}{24}=\frac{45}{50}[/tex]

bring the fractions to a common denominator

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Which type of transformation is described by (x,y)
(x,y) → (x-4, y+8)?

Answers

(x, y) => (x-4, y+8)  is a transformation of 4 units left and 8 units up

How is the transformation described?

From (x, y) to (x-4, y+8) ,

(a) Let us consider x => (x - 4)

Consider x axis and the ' - ' sign

Here a point moves  4 units to the left

(b) Let us consider y => (y + 8)

Consider  y axis and the ' + ' sign

Here a point moves  8 units  upwards

What is a transformation?

A point, line, or geometric object can be changed in four different ways that are all collectively referred to as transformations. Translation, rotation, reflection, and expansion are the four different types of transformation. The pre-image is the shape of the object as it was originally, and the transformed shape of the object is termed the image. Every point is equally distant from a fixed line in a reflection. Rotation is the act of turning about a central point .Translation is where every point of the shape must translate the same amount and in the same direction. A dilation is a resizing. A form changes size when you adjust it; even so, it retains the same appearance.

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geometry pls help its easy im just slow​

Answers

Answer:

3/7

Step-by-step explanation:

Which expression can be used to find the total number of squares below?


6 × 7

7 × 5

6 × 1

7 + 5

6 + 1

Answers

7 × 5 is used to find the total number of squares.

Each has 7 small squares.

There are 5 parts,

So we can write:

7+7+7+7+7

That is adding 7 five times. By this we get the total number of square.

So by multiplying 7 by 5 we get the total number of square.

= 7× 5

Therefore the expression 7×5 is used to find the total number of squares.

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that passes through the points
M (5-3) and N (8,1)
What is the slope of the line

Answers

Answer:

The slope of the line is 4/3

Step-by-step explanation:

slope = rise/run = y2-y1/x2-x1

1-(-3)/8-5 = 4/3

The slope of the line is 4/3

Find the area of the rectangle.
1 1/2 yd
58/ 8 yd

Answers

The area of the rectangle is  calculated by L*B

The area of the rectangle is 10.875 yards^2.

How to calculate the area?

l = 58/ 8 yd = 7.25yd

b = 1 1/2 yd = 1.5yd

Solution:

The area of the rectangle is  calculated by L*B

Therefore,

L*B =  7.25* 1.5

= 10.875 yards^2.

The area of the rectangle is 10.875 yards^2.

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Which algebraic expression is equivalent to the expression below?

8(3x - 5)
A.
24x - 40
B.
8x - 3
C.
8x - 8
D.
24x + 40

Answers

Answer: A

Step-by-step explanation:

Using the distributive property,

[tex]8(3x-5)\\\\=8(3x)-5(8)\\\\=24x-40[/tex]

A triangular cell has a perimeter of 26 m. Side A is 2 m shorter than twice side B, inside C is 3 m longer than side B. What is the length of each side?

Answers

Lengths are:

Side A = 4.25

Side B = 6.25

Side C = 9.25

What is perimeter?

The perimeter is the length of the shape's perimeter. It is determined by adding up all of the shape's sides. It is linearly stated and one-dimensional. Area, on the other hand, quantifies how much space a shape takes up. It is stated in square units and has two dimensions. The total distance around a shape, or the sum of its side lengths, is the shape's perimeter. Units used to measure perimeter (P) include millimeters (mm), centimeters (cm), and meters (m).

Given Data

A triangular cell has a perimeter of 26 m. Side A is 2 m shorter than twice side B, inside C is 3 m longer than side B

Side A = 2Side B - 2

Side C = Side B + 3m

Perimeter = Sum of all sides

Perimeter = Side A + Side B +Side C

Equating values

26 = 2SideB - 2 + Side B + Side B + 3

26 +2 - 3 = 4 Side B

25 = 4 Side B

Side B = [tex]\frac{25}{4}[/tex]

Side B = 6.25

Side A = 2(2.25) -2

Side A = 4.25

Side C = 6.25 +3

Side C = 9.25

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Find the y-intercept of the line on the graph. Help pls!

Answers

Answer:

Y-intercept is 4

Step-by-step explanation:

due to X and Y lines it would be 4 lol

Have a good day

Answer:

It is 4

Step-by-step explanation:

The line intercepts the y axis at 4

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A gym charges for attending exercise classes. Raquel pays $10 to attend
each class because she is a non-member. Since Viola is a member, she pays $15 per
month for a membership fee, but only $5 for each class.

Set the two expressions equal to each other. Solve this equation to determine how
many classes they would each have to attend to have the same cost.

Answers

The number of classes that they would each have to attend to have the same cost is 3 classes.

How to calculate the equation?

Viola is a member, she pays $15 per month for a membership fee, but only $5 for each class. This will be illustrated as 15 + 5x.

Raquel pays $10 to attend each class because she is a non-member. This will be illustrated as 10x

where x = number of classes

Therefore, the equation will be equated together. This will be:

10x = 15 + 5x

Collect like terms

10x - 5x = 15

5x = 15

Divide

x = 15 / 5 = 3

The number of classes is 3.

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At 59 F, crickets chirp at a rate of 76 times per minute, and at 65 F they chirp 100 times per minute. Write an equation in slope-intercept form that represents the situation.

Answers

The equation in slope-intercept form that represents the situation is y = 4x - 160.

Given,

At 59°F, crickets chirp at a rate of 76 times/minute

At 65°F crickets chirp at a rate of 100 times/minute

We have to write an equation in slope-intercept form:

Here,

(x₁, y₁) = (59, 76)

(x₂, y₂) = (65, 100)

Lets find the slope.

m = (y₂ - y₁) / (x₂ - x₁)

m = (100 - 76) / (65 - 59)

m = 24/6

m = 4

That is, the slope is 4.

Now, substitute this in the slope-intercept form:

y = mx + b

100 = 4 × 65 + b

100 = 260 + b

b = -260 + 100

b = -160

Therefore, the equation in slope-intercept form that represents the situation is y = 4x - 160.

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how do i do this question

Answers

Answer: So the question is asking you to see what will happen is like attempt 2.

Step-by-step explanation:

So I recommend reading what to do, if you still don't know, you can search it up or maybe even watch a video of how to do it.

I really hope this helps you!

100 POINTS + BRAINLEIST IF CORRECT

Answers

A kite contains four inner angles, which add up to 360 degrees. It has one pair of equal and opposite obtuse angles in each of these angles.

Answer:

∠D = 94°

Step-by-step explanation:

A kite is a quadrilateral.  

Therefore, the sum of its interior angles is 360°.

⇒ ∠A + ∠B + ∠C + ∠D = 360°

⇒ 108° + ∠B + 64° + ∠D = 360°

⇒ 172° + ∠B + ∠D = 360°

⇒ ∠B + ∠D = 188°

A kite has one pair of opposite (obtuse) angles that are equal.

Therefore, ∠D = ∠B.

⇒ ∠B + ∠D = 188°

⇒ ∠D + ∠D = 188°

⇒ 2∠D = 188°

⇒ ∠D = 94°

A rectangle as shown has a length of 11 centimeters and a width of 4.2 centimeters. A circle is drawn inside that touches the rectangle at two points. Which is the closest to the total area of the shaded region?A. 9.19 cm squaredB. 101.59 cm squared C. 60.05 cm squared D. 32.35 cm squared

Answers

The area of a rectangle can be calculated with this formula:

[tex]A_r=lw[/tex]

Where "l" is the length and "w" is the width.

The area of a circle can be found with this formula:

[tex]A_c=\pi r^2[/tex]

Where "r" is the radius of the circle.

Let be "d" the diameter of the circle shown in the picture. Since it touches the rectangle at two points, you can identify that:

[tex]d=w[/tex]

Since the radius of a circle is half the diameter, in this case this is:

[tex]d=\frac{4.2cm}{2}=2.1\operatorname{cm}[/tex]

Therefore, the area of the circle is:

[tex]A_c=\pi(2.1\operatorname{cm})^2=13.85\operatorname{cm}^2[/tex]

Now you must find the total area of the rectangle. Knowing that:

[tex]\begin{gathered} l=11\operatorname{cm} \\ w=4.2\operatorname{cm} \end{gathered}[/tex]

You get:

[tex]A_r=(11\operatorname{cm})(4.2\operatorname{cm})=46.2\operatorname{cm}^2[/tex]

In order to find the total area of the shaded region, you must subtract the total area of the rectangle and the area of the circle. Then, this is:

[tex]A_{sr}=46.2\operatorname{cm}-13.85\operatorname{cm}=32.35\operatorname{cm}^2[/tex]

The answer is: Option D.

Ellen’s dog has a pen that is 32 feet by 33 feet. What is the area of the dog pen?

A rectangle with length 3 cubed feet and width of 3 squared feet.

Find the area.

1. Multiply powers: 32 · 33

2. Expand each power: (3 · 3) · (3 · 3 · 3)

3. Simplify: 35



Complete each sentence.

The
of the original exponent is the exponent in the power of product.
The dog pen has an area of
square feet.

Answers

If Ellen's dog has a pen that is [tex]3^{2}[/tex] feet by [tex]3^{3}[/tex] feet, then the area of the dog pen is 243 square feet

Here the Ellen's dog pen is in rectangular shape

The area of the rectangle = l × w

Where l is the length of the rectangle

w is the width of the rectangle

In this question

The length of the rectangle =  [tex]3^{2}[/tex] feet

= 3×3

= 9 feet

The width of the rectangle =  [tex]3^{3}[/tex] feet

= 3×3×3

= 27 feet

Then the area of the dog pen = l × w

Substitute the values in the equation

The area of the dog pen = 9×27

= 243 square feet

Hence, if Ellen's dog has a pen that is [tex]3^{2}[/tex] feet by [tex]3^{3}[/tex] feet, then the area of the dog pen is 243 square feet

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Sum
        243
I found it on edge

the graph of F(x) = |x| is shown below. if you horizontally shift this function right 7 units, what is the equation of the new function?

Answers

ANSWER:

C. G(x) = |x - 7|

STEP-BY-STEP EXPLANATION:

An absolute value function has the following form:

[tex]y=|x-a|+b[/tex]

Where (a, b) is the origin, if we want to move 7 units to the right, we must add 7 units on the x-axis, that is, in a, therefore, the function would be:

[tex]\begin{gathered} G\left(x\right)=\left|x-+7\right| \\ \\ G(x)=\lvert x-7\rvert \end{gathered}[/tex]

So the correct answer is C. G(x) = |x - 7|

1/5x=15 what is x equal to?

Answers

Answer:

x=75

Step-by-step explanation:

because 1x=15

15x5=75 or 5 x

Liz's math test included a survey question asking how many hours students spent studying for the test. Thescatter plot below shows the relationship between how many hours students spent studying and their score onthe test. A line was fit to the data to model the relationship.Which of these linear equations best describes the given model?A) ŷ = 10x + 20B) ŷ = 20x + 20Or C) ŷ = -20x + 20Based on this equation, estimate the score for a student that spent 3.8 hours studying.Round your answer to the nearest hundredth.__________.

Answers

Answer: B. y = 20x +20

The score for a student that spent 3.8 hours studying is expected to be 96.

Step by step solution:

The point-slope form of a linear equation is y = mx + b, where m is the slope and b the intercept with the y-axis.

To find the line that fits the data and model the relationship, we need to find the slope. Let

y = Test score

x = Study time (hours)

[tex]\begin{gathered} m=\frac{y_1-y_2}{x_1-x_2} \\ (x_1,y_1_{})\text{ and }(x_2,y_2)\text{ Point in the line} \end{gathered}[/tex]

Two pair of coordinates from the line are (2, 60) and (3, 80):

[tex]m=\frac{60-80}{2-3}=\frac{-20}{-1}=20[/tex]

We have m = 20, and b = 20 (intercept with the y-axis)

The equation that model the relationship is:

[tex]y=20x+20[/tex]

Second Part. Basing ourselves on the above equation, estimate the score for a student that spent 3.8 hours studying x = 3.8.

[tex]\begin{gathered} y=(20\cdot3.8)+20 \\ y=76+20 \\ y=96 \end{gathered}[/tex]

The score for a student that spent 3.8 hours studying is expected to be 96.

THERE IS 5 QUESTIONS I NEED TO GET DONE IN TOTAL, BUT IT WONT LET ME PUT MANY PICS IN ONE QUESTION SO PLS GO TO MY ACC AND VIEW THE OTHER 3!!I NEED THIS BY **TODAY**​

Answers

Answer:

y=2x

Step-by-step explanation: given (0,0) (1,2)

y=mx+b

0=(m*0)+b

0=b

2=(1*m)+

2=m

y=mx+b

y=2x

Kesha is an hourly worker and is paid bi-weekly. Her wage is $25, and she is scheduled for 8 hours a day for 5 days a week. She also works 4 hours every other Saturday at time-and-a-half pay. How much is the gross income on Kesha’s paystub normally?(1 point) Responses $2,000 $2,000 $2,100 $2,100 $2,150 $2,150 $4,300

Answers

Answer:

$2,150

Step-by-step explanation:

Givens

We are given that Kesha is an hourly worker, is paid bi-weekly, and her wage is $25.

We are also told that she works 40 hours a week (derived from 8 hours a day for 5 days a week) and that she works 4 hours every other Saturday at time-and-a-half pay.

We are asked to find Kesha's gross income on her pay stub.

Solve

First, determine her weekly wage by multiplying her hourly wage by the number of hours she works each week:

[tex]\$25 \times 40 = \$1,000[/tex]

Then, multiply this value by 2 since Kesha is paid bi-weekly (twice a month):

[tex]\$1,000 \times 2 = \$2,000[/tex]

Then, determine her time-and-a-half pay by first multiplying her hourly wage by 1.5:

[tex]\$25 \times 1.5 =\$37.50[/tex]

Then, multiply this value by 4 to represent the hours she works every other Saturday:

[tex]\$37.50 \times 4 = \$150[/tex]

NOTE: Since "every other Saturday" means twice a month, this is the same definition as bi-weekly. Therefore, no adjustments need to be made to this value.

Finally, add her time-and-a-half pay to her bi-weekly pay:

[tex]\$2,000 + \$150 = \$2,150[/tex]

Final Answer

Therefore, Kesha's gross income on her pay stub is $2,150.

A clone has a volume of 1, 526.81 mm^3 and a height of 19mm. Find the radius of the cone

Answers

Radius of the cone is 8.75mm.

What is volume?

Volume is a mathematical term used to describe how much three-dimensional space an item or closed surface occupies. Volume is measured in cubic units like m³, cm³, in³, etc. Each thing in three dimensions takes up some space. The volume of this area is what is being measured. The space occupied within an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity.

Given Data

Volume = 1526.81 mm³

Height = 19mm

Formula of volume of cone:

V= [tex]\frac{1}{3}[/tex]πr²h

Equating values,

1526.81 = [tex]\frac{1}{3}[/tex]×[tex]\frac{22}{7}[/tex]r²×19

[tex]\frac{1526.81(3)(7)}{22(19)}[/tex] = r²

76.7 = r²

r = 8.75

So,

Radius of the cone is 8.75mm.

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PLEASE HELP 50 POINTS + BRAINLY FOR ALL AND CORRECT ANSWERS!!!

Answers

The values of x and y in the functions are

y = 6x + 8: y = -28 and x = 2y = 2/3x: y = -4 and x = 30y = -x + 5: y = -1 and x = -15y = 6.5x + 7:  y = -32 and x = 2

How to determine the functions at the x and y values

Function 1

This is given as

y = 6x + 8

When x = -6, we have

y = 6 x -6 + 8

Evaluate

y = -28

When the equation y = 20, we have

20 = 6x + 8

Evaluate the like terms in the above function

6x = 12

Divide by 6

x = 2

Function 2

This is given as

y = 2/3x

When x = -6, we have

y = 2/3 x -6

Evaluate

y = -4

When the equation y = 20, we have

20 = 2/3x

Evaluate the like terms in the above function

20 = 2/3x

Divide by 2/3

x = 30

Function 3

This is given as

y = -x + 5

When x = -6, we have

y = -6 + 5

Evaluate

y = -1

When the equation y = 20, we have

20 = -x + 5

Evaluate the like terms in the above function

x = -15

Function 4

This is given as

y = 6.5x + 7

When x = -6, we have

y = 6.5 x -6 + 7

Evaluate

y = -32

When the equation y = 20, we have

20 = 6.5x + 7

Evaluate the like terms in the above function

6.5x = 13

Divide by 6.5

x = 2

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