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Lana71 [14]
3 years ago
15

What’s the value of x in both a & b?

Mathematics
1 answer:
Paladinen [302]3 years ago
4 0

Answer:

a) 7

b) 2 2/7

Step-by-step explanation:

A) 2/7=2/x

x=7

B) 2/7=x/8

cross multiply

16=7x

x=16/7, or 2 2/7, or 2.2857

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Here is the set up:

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3 years ago
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Answer:

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Step-by-step explanation:

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8 0
2 years ago
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For percentage problems that do not deal with a specific starting number, it is always helpful to plug in 100 for the starting number. Here, we would then have a post-sale price of 90 dollars, and if we calculate the sales tax for the 90-dollar item it would be 90 * 0.09 = $8.10. THis gives us a total cost of 90 + 8.10 = $98.10, or 98.1% of the original 100-dollar price.

8 0
2 years ago
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I hope this helps
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