The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard deviation is 30
pages, what can you conclude?
O A. About 60% of the books have fewer than
150 pages.
O B. About 16% of the books have fewer than 150 pages.
O c. About 95% of the books have more than 150 pages.
O D. About 16% of the books have more than 150 pages.
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Answers

Answer 1

Answer:

I'm guessing that the answer is OB


Related Questions

The distance between city A and city B is 22 miles. The distance between city B and city C is 54 miles. The distance between city A and city C is 51 miles.

What type of triangle is created by the three cities?

an acute triangle, because 222 + 542 >512
an acute triangle, because 222 + 512 >542
an obtuse triangle, because 222 + 542 >512
an obtuse triangle, because 222 + 512 >542

Answers

Answer:

54 is the hypotenuse due to being the longer side(s).
54 ^2=2916 / 51^2=2601 / 22^2=484 = 2916=2601+484 // 22^2+51^2>54^2

Option B.

100 POINTS PLS HURRY I WILL ALSO MARK BRAINLIEST!!!!!

What is the shape of the cross section of the figure that is parallel to the rectangular base?

A. a parallelogram that is not a rectangle

B. a rectangle

C. a triangle that must have same dimensions as one of the faces

D. a triangle that does not have the same dimensions as one of the faces

Answers

Answer:

B. a rectangle

Step-by-step explanation:

A cross section is the new face you see when you slice through a 3D figure. So if you slice a rectangular pyramid parallel to the base, you get a smaller rectangle as the cross section. Similarly, if you slice parallel to a triangular base then your cross section will be a triangle.

Hope this helps and God bless!

Step-by-step explanation:

I think Its D because In the rectangular base its not equal sides like a square so it would be more be like sides that are not perpendicular.

hope it helps

5 positive integers are arranged in ascending order, as follows: 7 , 8 , 8 , 10 , x The median and the range are equal. Find x .

Answers

Answer:

6.6, 7, 8, 8, 10

Step-by-step explanation:

7+8+8+10+X = 33/5

= 6.6

X= 6.6

Carl has 9 1/2 cups of juice for a party. If each party goer gets exactly 3/5 cup of juice each, how many party goers will get their 3/5 cup of juice

Answers

Answer: 158

Step-by-step explanation:

Okay so the total is 9 5/10.

Each party goer needs 6/10

So 95/10 / 6/0=. 95/10x10/6

=950/6 = 158.

{32,33,34,34,36,38,38,38,40,42} what is the mean of the data set?

Answers

Answer:

add up all the numbers and multiply it by 32

Step-by-step explanation:

add up 32 33 34 34 36 38 38 38 40 42 amd then multiply that answer by 32

The population of New York City is about 8.4 × 10^6. What is 1/4of the population?
A. 2.1 x 105
B. 2.1 x 106
C. 4.2 x 105
D. 4.2 x 106

Answers

Answer:

2.1 x 10^6

Step-by-step explanation:

8.4 x 10^6 / 4 = 2.1 x 10^6

Pls help no wrong answers

Answers

Answer:

[tex]x\sqrt{2} = c[/tex]

Step-by-step explanation:

The Pythagorean theorem tells us that [tex]a^2+b^2=c^2[/tex], where a and b are the legs of a right triangle. If the length of each leg is x, we know by applying the theorem that [tex]x^2+x^2=c^2[/tex], so [tex]2x^2=c^2[/tex]. Applying the square root on both sides we get [tex]x\sqrt{2} = c[/tex]

can you help me i kinda in a hurry please

Answers

Answer:

x   y

2   1

4   2

6   3

Step-by-step explanation:

For each x-value, y is half of it.

Divide each x-coordinate by 2 to find the corresponding y-coordinate.

x   y

2   1

4   2

6   3

Step-by-step explanation:

Since y=1/2(x)

x y

2 1

4 2

6 3

Fill in this order

I hope it helped you

how can i get 40 for the numbers 5,4,3,2,1

Answers

Answer:

5x4=20

20x2=40

Step-by-step explanation:

Answer:

4 * 5 * 2 + 3 - 2 - 1

Step-by-step explanation:

remember pemdas

4 * 5 * 2 + 3 - 2 - 1 = 40

which equation is true for y?

Answers

ANSWER: D

REASON:
4(y x y) = 4(y^2) = 4y^2

Hope that helps!

How do you solve for 4, 5, or 6?

Answers

Answer:

see images

Step-by-step explanation:

For all of these questions it helps to know the special right triangle, the 30°-60°-90° triangle. There is a special shortcut to find the sides of the 30°-60°-90° triangle.

For question4 and 5, these are equilateral triangles so the angles are all 60° So if you drop the height, it makes two 30°-60°-90° triangles. ***The short leg is HALF the hypotenuse or the hypotenuse is DOUBLE the short leg. The long leg is the short leg × sqroot3.***

This shortcut, special rt triangle info is used in all three of your questions. See image. Then you will have base and height or the apothem and side length for the Apothem Area formula:

A = 1/2 a•s•n

where a is the apothem, s is the side length and n is the number of sides. It looked like you already used this formula. See image.

whats 1753x87694-463684=
help please

Answers

Answer:

65569898

Step-by-step explanation:

1753x87694=66033582

66033582-463684=65569898

Derek is conducting a survey in his school about extracurricular activities. Choose three things he should do to get a representative sample and check that it is representative. CLEAR CHECK Derek should ask people what grade they are in. Derek should randomly choose people only in his grade. Derek should ask people their age. Derek should ask people what their favorite color is. Derek should survey everyone in the school. Derek should offer the survey in multiple languages. NEXT CLOSE Reference calculator formulas glossary CLOSE Language Changes the language of the audio snippets and the glossary ENGLISH

Answers

Yh I got one wrong but it's a little light green :) Hope this helps!

Are the two cones congruent? explain and include details to support your claim.

Answers

The two cones are not congruent because one of the cones is oblique in nature.

What are congruent shapes?

Congruent shapes are identical in size and shape. To put it another way, if you hold an object or element in a mirror, the picture you get is congruent to the object.

However, two figures may seem to be identical, but one side or angle in one figure may deviate significantly from the other. The easiest technique to assess sides and angles to check if they are equivalent or congruent is to use markings on figures.

When we apply that technique to the two figures, we realized that the two cones are not congruent because one of the cones is oblique in nature, this resulted in a difference in the slant height of the cones.

Learn more about congruent figures here:

https://brainly.com/question/25837892

Matching equations with diagrams & finding unknown angles #3
Which equation(s) and angle measurements go with the
diagram. Choose ALL that apply.
Find the value of a.
(Select all that apply.)

please help

Answers

Answer: a+51=90, a+51+90=180, 39

Step-by-step explanation:

a+51=90 works because the angles add to form a right angle.

a+51=180 does not work because the angles add to form a right angle, not a straight angle.

a+51+90=180 works because all those angles add to form a straight angle.

a+90=180 does not work because the unknown in this situation refers to a+51, not just a.

Solving the equation, we get a=39, so 39 is also an answer.

jane can do a job in 3 hours, while gary can do the same job in 2 hours. if jane works alone for an hour before gary helps her how long will it take them to finish the job together

Answers

Answer: 2hrs?

Step-by-step explanation: 3-2=1+1 hour she took alone = 2hrs

Answer:

3 hours as Jane will take 1 hour before Gary and Gary will work for 2 hours. I think

write an equation that gives the proportional relationship of the graph.
A. y=1/4x
B. y=3x
C. y=4x
D. y=12x

Answers

Answer:

y=3x+4

Step-by-step explanation:

This is one equation.

What is the greatest common factor of 13x and 14x^3?

Answers

Answer:

x

Step-by-step explanation:

13 and 14 share no factors except for 1Both have x in them, so the answer is x

Kyle baked 20 cookies. If
1
4
of the cookies are chocolate chip, how many chocolate chip cookies did he bake?

Answers

Answer:

5

1/4 of 20 is 5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

20x1/4 or 20÷4=5

If x+3/3=y+2/2, then x/3=___

Answers

Answer:

y/2

Step-by-step explanation:

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

x/3 + 1 = (y+2)/2

x/3 = (y+2)/2 - 1

= (y+2-2)/2

= y/2

which one is greater than 0

Answers

Answer:

My guess is A

Step-by-step explanation:

-We see as C and B are both negitive

-D is on the zero Y line

-A is fully 2 postive numbers

A would be the largest of them all and greater than 0!

The ordered pairs for two points are listed in the table. What is the equation, in slope-intercept form, of the line that contains these points? A. y = x + 1 B. y = -x – 1 C. y = -x + 1 D. y = x – 1

X Y
1 -2
4 -5

Answers

Answer:

B. y = -x – 1

Step-by-step explanation:

calculate slope  =

y2-y1   =  -5- (-2)  =  -3

x2-x1   =   4 - 1     =   3

m (slope) = -3/3 =  -1

using points (1,-2) for calculating y-intercept:

y = mx + b

-2 = -1(1) + b

-2 = -1 + b

-1 = b

b = -1

answer is B   y=  -x - 1

Karen is using a number line to represent the doors in the school hallway. She labels 0. 25, 0. 5, and 0. 75 on the number line as a scale reference. Where should Karen place a mark to represent a door that is 0. 7 from the start of the hallway? Explain. A. 0. 7 is less than 0. 75, so it is a little to the left of 0. 75. B. 0. 7 is less than 0. 75, so it is a little to the right of 0. 75. C. 0. 7 is greater than 0. 75, so it is a little to the right of 0. 75. D. 0. 7 is greater than 0. 75, so it is a little to the left of 0. 75

Answers

Answer:

A

Step-by-step explanation:

hard question help me

Answers

Here you divide the number from denominator to numerator. Example 3/3=1, 8/2=4 in denominator and 1 in numerator since 2/2=1

How many ways can eight different cans of soup be displayed in a row on a shelf?

Answers

Answer:

you can stack them

Step-by-step explanation:

this a wierd question

I got three as the answer

Find the area of the regular polygon

Answers

Answer:

891.75 sq.ft is the area of the polygon

Step-by-step explanation:

9.2^2 + 10^2= 184.64

√184.64= 13.59 feet

area of regular octagon=A=2(1+√ 2)a^2

A= 2(1+√2)13.59^2

A=891.75 sq.ft(approx)

The daily number of miles driven by a bus driver during a week are 50, 65, 78, 54, 53, 61, 79, and 78.

Which statement is true?



Both the mean and mode are appropriate measures of center.

Both the median and mode are appropriate measures of center.

Both the mean and median are appropriate measures of center.

The mode is the only appropriate measure of center.

Answers

Answer:

C Both the mean and median are appropriate measures of center.

Step-by-step explanation:

1
2
3
4
5
6
7
8
9
10
Which equation can be used to find the unknown length, b, in this triangle?
5 in.
4 in
=
O 42+ b2 = 52
O 42-62 = 52
O 52 +42 – 52

Answers

Answer:

this question isn't quite clear, is the diagram of the triangle necessary for me to answer this question ?

Step-by-step explanation:

but by simple analysis,

since the "unknown" is b

option (a) which is 42 + b2 = 52 is the best equation.

because we are looking for the value of "b", therefore there should be letter "b" in equation we're going to use. hope you understand...

Hope this helps .

I need help ASAP please!!!!!!

Answers

Answer:

d

Step-by-step explanation:

surface area of cylinder=2πr(r+h)

2*3.14*4(4+7)

25.12*11

276.3in²

Answer:

Step-by-step explanation:

2πrh+2πr^2 is the formula for finding the surface area of a cylinder.

Since the question said to use 3.14 for pi,

2 * 3.14 * 4* 7 + 2*3.14*16

= 175.84 + 100.48

= 276.32 in^2

So, the answer is d, 276.3 (rounded to 1 decimal place)

Given the line y=3/5x+2 find the perpendicular line passing through the point (12,-7)

Answers

Answer:

y=-5/3x+13.

Step-by-step explanation:

As a line that is perpendicular to anoher line has a slope that is the negative reciprocal of the line's original slope, we know that the slope of our new line is -5/3. As it passes point (12, -7), we can use the point slope formula which is y-y1=m(x-x1). So plug in, y+7=-5/3(x-12) and that gives us y+7=-5/3x+20 which gives our final answer of y=-5/3x+13.

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