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Kipish [7]
2 years ago
14

At Pages Aplenty book store, the more books you buy, the more books you get! With the special deal, a customer gets 2 free books

for every 7 purchased books. Larry purchased 21 books. How many free books did Larry get? What proportion could be used to solve this problem?
Mathematics
1 answer:
Sergio039 [100]2 years ago
4 0

Answer: 6

Step-by-step explanation:

2 free books7 purchased books=? free books21 purchased booksCompare the denominators.2 free books7purchased books=? free books21purchased booksTo get from 7 to 21, multiply by 3. Multiply the numerator and denominator by 3 to find the number of free books Larry got.2 free books37 purchased books3=6free books21 purchased booksLarry got 6 free books

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Express each number in standard form.
Vitek1552 [10]

a) 1,000 + 0 + 40 + 9

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3 0
3 years ago
H varies directly to the cube of c.<br> When H = 40, C = 2.<br> (a) Express H in terms of c.
Alecsey [184]

Answer:

H in terms of c is H = 5c³.

Step-by-step explanation:

Given that:

H = 40 and c = 2

H varies directly to the cube of c.

Which means that,

H ∝ c³

Let,

k be the proportionality constant.

H = kc³

Putting H=40 and c=2

40=k(2)^3\\40=k(8)\\40=8k\\8k=40

Dividing both sides by 8,

\frac{8k}{8}=\frac{40}{8}\\k=5

Now,

H in terms of c.

H = 5c³

Hence,

H in terms of c is H = 5c³.

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3 years ago
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statuscvo [17]
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Colt1911 [192]

Answer:

xy=15

Step-by-step explanation:

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Answer:

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Though, I do not believe that is the answer you are looking for.

7 0
3 years ago
Read 2 more answers
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