Select the correct answer. 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? A. About 60% of the books have fewer than 150 pages. B. About 16% of the books have fewer than 150 pages. C. About 95% of the books have more than 150 pages. D. About 16% of the books have more than 150 pages.

Answers

Answer 1

Answer:

c

Step-by-step explanation:


Related Questions

solve the inequality:
5 (2h+8) < 60

Answers

Answer:

5 (2h+8) < 60

10h+40<60

10h<20

h<2

Your Welcome

BIFFY OUT!!!

calculate the volume of a ball having a radius of 8 cm​

Answers

Answer:

267.9 [tex]cm^{3}[/tex]

Step-by-step explanation:

volume of a circle = 4/3 * π *[tex]r^{2}[/tex]

=4/3 *3.14 *[tex]8^{2}[/tex]

=12.56/3 *64

=803.84/3

=267.94

=267.9 [tex]cm^{3}[/tex]

Which of the following best describes the term postulate?
A. A statement that is not officially defined but that is understood to be common sense

B. A precise statement of the qualities of an idea, object, or process

C. A logical arrangement of deductions that leads to the conclusion that a statement is always true

D. A statement that is assumed to be true without proof​

Answers

Answer:

D. A statement that is assumed to be true without proof​

Step-by-step explanation:

Given the following quadratic equation, find the average rate of change
for the interval (1,3]. *
f(x)= 3x^2

Answers

Answer: The average rate of change is 1 over 3, or just 1/3. The y-values change 1 unit every time the x-values change 3 units, on this interval! hope this helps

What are the zeros of the quadratic function
y = 6x2 + 3x - 45

Answers

Answer:

l think

y= x^2

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..

..

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Mark Brainliest please

Answer :


x = −3
x = 5/2 = 2.500

seventh, and eighth grade students. The 5 sixth
grade and 9 seventh grade students make up
43.75% of the entire team. How many eighth
grade students are on the team?

Answers

Answer:

18

Step-by-step explanation:

First, we know that the total is equal to 100%. We then know that 14 students make up 43.75%, and eight grade students make up the rest, at 100-43.75=56.25%.

One way we can figure this out to find how many students make up each percent. To find this, we can simply divide the number of students (14) by their percent (43.75) to get 14 students/43.75 percent = 0.32 students per percent. We can then multiply this by 56.25 to get 18 as our answer for the number of eight graders.

Answer: 18

Step-by-step explanation:

14/43.75% = 0.32

56.25 × 0.32 = 18

Therefore, 18 is the answer to this equation.

will someone help me on this please i really need this

Answers

Answer:

2.24

Step-by-step explanation:

the total surface area=

(3+10+5+10+6)×(20) + (2×3×24) + (2×½×(14+10)×3)

= 680 + 144 + 72

= 896 ft²

the paint will be needed at least :

896/400 × 1 gallon = 2.24 gallons

Solve for x.
6(x - 2) = 4

a) x = 2 1/3

b) x = 1 1/3

c) x = 1

Answers

Answer:

x = 2 2/3

Step-by-step explanation:

6(x - 2) = 4

Distribute

6x - 12 = 4

Add 12 to each side

6x-12+12 = 4+12

6x = 16

Divide by 6

6x/6 = 16/6

x = 8/3

x = 2 2/3

[tex]\implies {\blue {\boxed {\boxed {\purple {\sf {x = 2 \frac{2}{3}}}}}}}[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}[/tex]

[tex]6 \: ( \: x - 2 \: ) = 4[/tex]

➼[tex] \: 6x - 12 = 4[/tex]

➼[tex] \: 6x = 4 + 12[/tex]

➼[tex] \: 6x = 16[/tex]

➼[tex] \: x = \frac{16}{6} [/tex]

➼[tex] \: x = \frac{8}{3} [/tex]

➼[tex]\:x = 2 \frac{2}{3} [/tex]

[tex]\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}[/tex]

[tex]6 \: ( \: x - 2 \: ) = 4[/tex]

➺[tex]\:6 \: ( \: 2 \frac{2}{3} - 2 \: ) = 4[/tex]

➺[tex] \: 6( \: \frac{8}{3} - 2 \: ) = 4[/tex]

➺[tex] \: 6 \: ( \: \frac{8 - 6}{3} \: ) = 4[/tex]

➺[tex] \: 6 \: ( \: \frac{2}{3} \: ) = 4[/tex]

➺[tex] \: 6 \times 0.667 = 4[/tex]

➺[tex] \: 4.002 = 4[/tex]

➺[tex] \: 4 = 4[/tex]

➺[tex] \: L.H.S.=R. H. S[/tex]

[tex]\boxed{Hence\:verified.}[/tex]

[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]

Linda was pulled over by a policeman
for driving 80 miles per hour. One mile
is about 1.61 kilometers. About how
many kilometers per hour was Linda
driving when she got pulled over by the
policeman?

Answers

Answer:128.74

Step-by-step explanation:

hank paid #3.50 for 2 hamburgers. how much will he pay for 8 hamburgers?

Answers

Answer:

$14

Step-by-step explanation:

3.50/2= 1.75

1.75*8= 14

PLEASE HELP: Click on the graph to choose the correct answer to the equation.
x + y > 0

(the ones with multiple are all separate I just couldn't attach all.)

Answers

Answer:

It's the third one, I hope so. y<1/2x

Step-by-step explanation:

I hope this helps. :)

Is y = 3 a possible solution to the following system of equations? Explain why or why not.
X + 2y + z = 28
3x + 3z = 60
O y = 3 is not possible because when 3 is submitted in for y in the first equation the value for x + z is not 20.
O y = 3 is possible because when 3 is substituted in for y in the first equation the value for x + 2 times 3 is 60.
Oy - 3 is possible because there is no y term in the second equation so y can be any value.
Oy - 3 is not possible because there is no y term in the second equation making it a no solution situation
No

Answers

Step-by-step explanation:

y = 3 is not possible because when 3 is submitted in for y in the first equation the value for x + z is not 20.

Find the measure of the missing angles to name the shortest and longest sides. (2x) x+15) 1. X= 2.

Answers

Answer:

KINDLY CHECK EXPLANATION

Step-by-step explanation:

The triangle Given is right angled :

Hence, the sum of the two angles = 90°

Hence, 2x + (x + 15) = 90

2x + x + 15 = 90

3x = 90 - 15

3x = 75

x = 75 / 3

x = 25

2x = 2 * 25 = 50

(x + 15) = 25 + 15 = 40

Hence, largest angle = angle Y

Largest side = side opposite largest angle = AD

smallest angle = (x + 15) = 40

Smallest side = side opposite smallest angle = AY

A hat contains slips of paper with the names of the 26 other students in Eduardo’s class on them, 10 of whom are boys. To determine his partners for the group project, Eduardo has to pull two names out of the hat without replacing them.

What is the probability that both of Eduardo’s partners for the group project will not be boys?

StartFraction 9 Over 65 EndFraction
StartFraction 24 Over 65 EndFraction
StartFraction 64 Over 169 EndFraction
StartFraction 128 Over 325 EndFraction

Answers

Answer:

24/65

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

edge 2023

a. 37
b. 62
c. 60
d. 39

Answers

Answer:

39 lang po

Step-by-step explanation:

samatolong sana lag Yan nyo po Ng brainlest

[tex]\huge\bold{Given :}[/tex]

Angle ABC = 81°

Angle BAC = a°

Angle BCA = 62°

[tex]\huge\bold{To\:find :}[/tex]

The measure of a.

[tex]\large\mathfrak{{\pmb{\underline{\orange{Solution}}{\orange{:}}}}}[/tex]

[tex]\longrightarrow{\green{a.\:37°}}[/tex] 

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}[/tex]

We know that,

[tex]\sf\pink{Sum\:of\:angles\:of\:a\:triangle\:=\:180°}[/tex]

➪ ∠ ABC + ∠ BAC + ∠ BCA = 180°

➪ 81° + a° + 62° = 180°

➪ a° + 143° = 180°

➪ a° = 180° - 143°

➪ a° = 37°

Therefore, the measure of a is 37°.

Now, the three angles of the triangle are 81°, 37° and 62°.

[tex]\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}[/tex]

∠ ABC + ∠ BAC + ∠ BCA = 180°

✒ 81° + 37° + 62° = 180°

✒ 180° = 180°

✒ L. H. S. = R. H. S.

[tex]\boxed{Hence\:verified.}[/tex]

( Note: Kindly refer to the attached file. )

[tex]\huge{\textbf{\textsf{{\orange{My}}{\blue{st}}{\pink{iq}}{\purple{ue}}{\red{35}}{\green{ヅ}}}}}[/tex]

what is the scale factor from figure a to figure b

Answers

Answer:

[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

The scale factor is the ratio of corresponding sides , B to A

The right vertical side of B is 2 units

The right vertical side of A is 4 units

scale factor = [tex]\frac{2}{4}[/tex] = [tex]\frac{1}{2}[/tex]

Please help me i need someone to help!

Answers

Answer:

so to do this we basicely just go through and substitute the anser in and see if it works.

60+10=70

60-10=50

NO

50+20=70

50-20=30

RIGHT

so the answer is the second one

2. The sum of k and 10 is 48

Answers

Answer:

k=38

Step-by-step explanation:

38+10=48

Triangle ABC is reflected across x = 1 and y = -3. What are the coordinates of reflection image of A after both reflections

Answers

Answer:

(1,0)&(0,-3)

Step-by-step explanation:

might be not sure..

1.875mps into kilometers per hour​

Answers

Answer:

Answer:

6,75 kilometres per hour

Step-by-step explanation:

1,875×18÷5

=6,75

How do I solve this please? Can SOMEONE please help me this and the ones Iposted on my page.

Answers

Answer: [tex]\dfrac{15}{64}[/tex]

Step-by-step explanation:

Given

Inside radius of figure [tex]r_1=\frac{14}{2}=7\ ft[/tex]

Outside radius of figure [tex]r_2=\frac{16}{2}=8\ ft[/tex]

Area of outside region is [tex]A_1=\pi (8^2)[/tex]

Area of inside region [tex]A_2=\pi (7)^2[/tex]

Area of shaded region [tex]A_1-A_2[/tex]

Probability that point lies inside the shaded region is

[tex]\Rightarrow P=\dfrac{A_1-A_2}{A_1}\\\\\Rightarrow P=\dfrac{\pi (8^2-7^2)}{\pi 8^2}\\\\\Rightarrow P=\dfrac{64-49}{64}\\\\\Rightarrow P=\dfrac{15}{64}[/tex]

what is the solution to this equation?
4x+16-x=22+6

Answers

Answer:

x=4

Step-by-step explanation:

4x+16-x=28

4x-x+16=28

3x+16=28

3x=28-16

3x=12

x=12/3

x=4

Find the median of the given data 60cm,56cm,45cm,50cm,54cm,51cm,52cm,48cm,46cm,53cm​

Answers

56 72 an another one but I’m not that sure

A figure is shown with the given dimensions.



What is the area, in square feet, of the figure?

Answers

Answer:

[tex] \blue{A = 24~ft^2} [/tex]

Step-by-step explanation:

This figure is a trapezoid with bases of 10 ft and 6 ft and height of 3 ft.

[tex] A = \dfrac{b_1 + b_2}{2}h [/tex]

[tex] A = \dfrac{10~ft + 6~ft}{2} \times 3~ft [/tex]

[tex] \blue{A = 24~ft^2} [/tex]

Please help! I don't know how to do this.

Write a polynomial of least degree with roots 1 and 2.

Answers

Answer:

f(x) = x^2 - 3x + 1.

Step-by-step explanation:

If the roots of this polynomial are 1 and 2, the corresponding factors are (x - 1) and (x - 2).  Multiplying, we get

f(x) = (x - 1)(x - 2) = x^2 - 3x + 1

The polynomial of least degree with roots 1 and 2 is f(x) = x^2 - 3x + 1.

A company has the pay scales below , with the percent of employees receiving that pay listed. Find the best value to represent an average salary at this company. ( round to the nearest dollar ) Job Salary Percent of Employees Entry 23,264 60% 47,480 38% 117,027 2%

Answers

Answer:

$34,341

Step-by-step explanation:

Given :

Job Salary Percent of Employees Entry 23,264 60% 47,480 38% 117,027 2%

To obtain the best value for the mean salary ; we obtain the weighted average ;

Σ(salary * weight factor) / Σ weight

[(23264 * 0.60) + (47480 * 0.38) + (117027 * 0.02)] ÷ (0.60 + 0.38 + 0.02)

= 34341.34 / 1

Average salary = 34341.34

= $34,341 ( nearest dollar)

calculate the percentage increase if the price of a $30 train ticket is increased to $42​

Answers

Answer:

40 % increase

Step-by-step explanation:

New price - original price

42-30 = 12

Divide by original price

12/30 = .4

Change to a percent

.4 * 100

40%

40 % increase

Please help if you know how to solve it
Thank you!

Answers

Answer:

opsihsjijjakih

Step-by-step explanation:

jiompzjksuik

79a hope this helps!!! :)

Identify the type of function represented by
f(x) = 4.2%
O A. Exponential growth
O B. Exponential decay
O C. Decreasing linear
O D. Increasing linear

Answers

i think it’s decreasing linear

Find the point that partitions a segment AB where A (-2, -6) and B (6, 12) into two equal parts.

Answers

The midpoint for any segment/line when you're given the start and end point of the line as A=(x1,y1) and B=(x2,y2) is

(   ((x1 + x2) /2), ((y1 + y2)/2)   )

So here the point is

(  (-2+6)/2), (-6+12)/2)  )

= (2, 3)

So it's the second option

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