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chubhunter [2.5K]
3 years ago
6

In 9 hours, Yoko reads 72 chapters of a book. What is her rate in chapters per hour?

Mathematics
2 answers:
Deffense [45]3 years ago
6 0

72/9 = 8

She read 8 chapters per hour.

mel-nik [20]3 years ago
5 0

Answer:

8

Step-by-step explanation:

You do 72 ÷ 9 which equals 8 which is your hourly rate

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A jar contains only dimes and nickels. The total number of coins in the jar is
pogonyaev

Answer:

5 dimes and 10 nickels

Step-by-step explanation:

0.1d + 0.05n = 1

d + n = 15

d + 0.5n = 10

d + n = 15

0.5n = 5

n = 10

d + n = 15

d + 10 = 15

d = 5

Answer: 5 dimes and 10 nickels

4 0
2 years ago
Find the zeros of the function. Write the smaller solution first, and the larger solution second. f(x)=(x+8)^2−1
BartSMP [9]

Answer:

zeroes: x = -9 and x = -7

Step-by-step explanation:

f(x)=(x+8)^2−1

A "zero" refers to when the y-value on the graph is zero.

0 = (x+8)^2 - 1

1 = (x+8)^2

+ or - 1 = x+8

so break them apart into two equations

x+8 = 1  OR  x+8 = -1

x = -7  OR  x = -9

You can plug both back in to check that the equation works!

4 0
3 years ago
Use substitution to solve this problem<br>a=5, b=2<br>5a - b = ‽<br>​
Rom4ik [11]
Plug the numbers into the equation

5(5) - 2 = ?

25 -2 = 23

23
3 0
3 years ago
I need helpppp (10 points )
irga5000 [103]

Answer:  The flagpole is about 22.3 feet tall.

This is roughly the size of a two story building, assuming each floor is 10 feet or so.

Since this height is under 25 ft, this flagpole is in compliance with the regulation.

=====================================================

Work Shown:

The horizontal leg of the triangle is 36 ft. This is the adjacent leg to the reference angle 25 degrees.

The vertical leg of the triangle is x-5.5, and this leg is the opposite side to the reference angle 25 degrees.

Use the tangent rule to connect the opposite and adjacent sides.

Solve for x.

tan(angle) = opposite/adjacent

tan(25) = (x-5.5)/36

36*tan(25) = x-5.5

x-5.5 = 36*tan(25)

x = 36*tan(25)+5.5

x = 22.28707569358

x = 22.3 ft is the approximate height of the flagpole

Make sure your calculator is in degree mode.

The height is not over 25 ft, so this flagpole meets the requirements.

4 0
3 years ago
Find the area of the irregular polygon. Round your answer to the nearest tenth if necessary.
kvasek [131]
The answer is 60 square cm

How to solve:

3 0
3 years ago
Read 2 more answers
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