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Vitek1552 [10]
3 years ago
5

Lakisha had 10 dollar bills and 1 bills in her wallet. She used seven bills to buy a pair of shoes for 43 dollars. How many of e

ach type of did she spend?
Mathematics
1 answer:
solmaris [256]3 years ago
6 0

Answer: she spent three 1 dollar bills and and four 10 dollar bill.

Step-by-step explanation:

Let x represent the number of 1 dollar bills that she used.

Let y represent the number of 10 dollar bill that she used.

She used seven bills to buy a pair of shoes. This means that

x + y = 7

The amount that she spent on the pair of shoes is $43. This means that

x + 10y = 43 - - - - - - - - - - 1

Substituting x = 7 - y into equation 1, it becomes

7 - y + 10y = 43

- y + 10y = 43 - 7

9y = 36

y = 36/9 = 4

x = 7 - y = 7 - 4

x = 3

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The test statistic of z=1.92 is obtained when testing the claim that p≠0.767. a. Identify the hypothesis test as being​ two-tail
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Franco has enough paint to cover an area of approximately 226 square feet. he needs to paint a cylinder that is 5 feet long. wha
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The required radius of the cylinder that can be covered by the paint exists at 3.8 feet.

Franco has enough paint to protect an area of about 226 square feet. He must paint a cylinder that exists 5 feet, and the maximum possible radius of the cylinder that can be covered by the paint exists to be determined.

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