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Vitek1552 [10]
2 years ago
11

Ariana is shopping for toilet paper, and she prefers to get the best unit price she can. At the store, brand A is priced at $49

for 7 rolls of toilet paper and brand B is priced at $72 for 9 rolls of toilet paper.
Mathematics
1 answer:
Westkost [7]2 years ago
7 0

Answer:

The best unit price is Brand A.

Step-by-step explanation:

We can find the cost for each roll of toilet paper. For Brand A, we can do 49/7, which we get 7. That means that every roll of toilet paper cost $7 for Brand A. For Brand B, we do 72/9 and get 8. That means every roll of toilet paper cost $8 for Brand B. Since Brand A is cheaper per roll, Ariana should buy from that brand.

I hope this helped and please mark me as brainliest!

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Answer:

7. cos(X) = 3/5 = 0.6

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Step-by-step explanation:

The trigonometric ratio for cosine is given as follows;

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7. The adjacent leg length to ∠X = 27

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cos(Y) = 4/5 = 0.8

8. The adjacent leg length to ∠X = 15

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The adjacent leg length to ∠Y = 13·√3

∴ cos(Y) = 13·√3/26 = (√3)/2 ≈ 0.8660

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