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Art [367]
3 years ago
12

You have a certain number of books in your library. You bought more books to triple your amount, then decide to give 14 away to

your local school. You then give half of your remaining books away to charity. You end with 8 books left. How many books did you start with?
Mathematics
1 answer:
Nastasia [14]3 years ago
8 0

Answer:

10 :)

Step-by-step explanation:

(3x - 14) / 2 = 8

3x - 14 = 16

3x = 30

x = 10

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Read 2 more answers
If g(x)=3x-11, what is x is g(x)=289
Liula [17]

Answer:x=100

Step-by-step explanation:

Since you know that g(x)=3x-11 all you have to do is substitute that into g(x)=289. So you get 3x-11=289. To get x you have to add 11 on both sides.

3x-11=289

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Divide 3 on both sides to get x by itself

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---- -------

3 3

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3 years ago
Find the length of side a.<br> 5<br> 3<br> O A. 16<br> O B. 34<br> O c. 2<br> O D. 4
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Answer:

D

Step-by-step explanation:

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5 0
2 years ago
Two years ago, Sally had 5,000 dogs in her dog shelter. Now she has 24,575 dogs. What is the
vodomira [7]

Two years ago, Sally had 5,000 dogs in her dog shelter. Now she has 24,575 dogs. The rate of change is 391.5 % increase

<em><u>Solution:</u></em>

Given that Two years ago, Sally had 5,000 dogs in her dog shelter

Now she has 24,575 dogs

To find: rate of change

A rate of change is a rate that describes how one quantity changes in relation to another quantity

<h3><u>Steps to follow:</u></h3>
  • First: work out the difference (increase) between the two numbers you are comparing.
  • Increase = New Number - Original Number.
  • Then: divide the increase by the original number and multiply the answer by 100.
  • % change = Increase ÷ Original Number x 100

\text {rate of change }=\frac{\text { new value }-\text {original value}}{\text {original value}} \times 100

\begin{array}{l}{\text { rate of change }=\frac{24,575-5000}{5000} \times 100} \\\\ {\text { rate of change }=\frac{19575}{5000} \times 100=391.5}\end{array}

Thus the rate of change is 391.5 % increase

5 0
3 years ago
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