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Darina [25.2K]
3 years ago
14

Can you help me with the problem listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!! :)

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
6 0

Answer:

14 books

Step-by-step explanation:

Let b = number of books at the beginning

She sold 1/2 of the books

b - 1/2 b

This is how many she had left

Then she bought 7

b - 1/2 b + 7

this equals 14

b - 1/2 b + 7 = 14

Combine like terms

1/2 b + 7 = 14

Subtract 7 from each side

1/2 b = 14-7

1/2 b = 7

Multiply each side by 2

1/2 b * 2 = 7*2

b = 14

She started with 14 books

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Raymond has 120 books on his bookshelf that he has not read. He plans on reading 3 books per week until there are only 24 books
Oksi-84 [34.3K]

Answer:  The correct option is (A) 120-3w=24;~32.

Step-by-step explanation:  Given that Raymond has 120 books on his bookshelf that he has not read. He plans on reading 3 books per week until there are only 24 books that he still needs to read.

We are to find the equation that can be used to determine the number of weeks it will take Raymond to have only 24 books left.

Also, we are to find the number of weeks.

The number of weeks  it will take Raymond to have only 24 books left is represented by 'w'.

We have

number of books read by Raymond is 1 week = 3.

So, number of books read by Raymond is w weeks = 3w.

Since, there are total 120 books on his bookshelf, so the number of books left to read after w weeks will be

120-3w.

According to the given information, we get

120-3w=24\\\\\Rightarrow 3w=120-24\\\\\Rightarrow 3w=96\\\\\Rightarrow w=32.

thus, the required equation is 120-3w=24 and number of weeks is 32.

Option (A) is correct.

8 0
3 years ago
Answer this question:What is the difference between 9 < x and 9 = x? Explain.
maw [93]

9 < x

this means that x is a larger number than 9

9 = x

this means that x is equal to 9

3 0
3 years ago
Kim sold a house for $250,000 and made a 2% commission. How much money did Kim make from commission for selling the house?
Vikki [24]

Answer:

5000

Step-by-step explanation:

2% of 250,000 is 5000

4 0
3 years ago
Read 2 more answers
Two boats start their journey from the same point A and travel long directions AC and AD as shown below what is the distance CD
Olegator [25]

I think its B but ima have to check again and get back to you

4 0
3 years ago
Read 2 more answers
Help me please and thank you
Kisachek [45]

Answer:

12.5 un^2

Step-by-step explanation:

The formula for area of a trapezoid is (a+b)/2 *h

a and b are the shorter and longer bases respectively. H is height, you have both.

Simply plug it into the equation and find your answer.

(2.5+7.5)/2 *2.5 = 5*2.5 which is equal to 12.5. Add units.

8 0
3 years ago
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