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creativ13 [48]
3 years ago
12

Josh paid for four books with 3 20$ bills He received 16 $ in change Each book cost the same amount how much did each book cost

Mathematics
2 answers:
azamat3 years ago
8 0

Answer:

each book cost $11

Radda [10]3 years ago
4 0
Answer: Each book costs $11

Explanation: If Josh paid for 3, 20 bills he would be paying $60, and if he got $16 in exchange you could subtract that from the amount he gave (60-16 = 44) then you would get how much all the books costs TOGETHER. But what you need to find is how much each book costs, you know they all cost the same and how much books he bought (4) so you just divide 44 by 4 which would get you 11.

(Hope this helps!)
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Step-by-step explanation:

The question is not well written. I guess what you mean is:

Subtract -2x^2+4x-1 ( minus 2x squared plus 4x minus 1) from 6x^2+3x-9 (6x squared plus 3x minus 9).

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6x²+3x-9 - (-2x²+4x-1)

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8x²-x -8

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