3 years ago

Jin buys 4 balls of yarn for a total of $23.78 she pays with two $20 Bill's. What is her change?

Mathematics

1 answer:

bixtya [17]3 years ago

6 0

16.22 because two twenty dollar Bill's equals 40 then subtract 23.78 which equals 16.22

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<u>ANSWER</u>

$B=63\degree$

<u>EXPLANATION</u>

We want to solve the trigonometric equation;

$tan^2(B)=4$ , where $0\degree \le B \le 90\degree$ .

Taking square root of both sides gives,

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