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Taya2010 [7]
3 years ago
7

candice buy a board that is 12 feet long. the store incorrectly masures and prices the board at 13.2 feet. what is the percentag

e. the choices are 15%, 10%, 12.5%, 20%
Mathematics
1 answer:
Galina-37 [17]3 years ago
6 0
The board was increased by 1.2 feet. The percentage increase was about 10%
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Answer:

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Step-by-step explanation:

We are given that

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Using quadratic formula

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

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t=\frac{10+\sqrt{6500}}{32}=2.83

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