2 years ago

Quick algebra 1 question for 10 points!

1 answer:

4 0

$denote \: by \: s \: the \: cost \: of \: a \: sweatshirt \\ denote \: by \: t \: the \: cost \: of \: a \: t \: shirt$

$3t + 7s = 240.5 \\ 6t + 5s = 220$

$- 6t - 14s = - 481 \\ 6t + 5s = 220$

$- 9s = - 261 \\ s = \frac{ - 261}{ - 9} = 29 \: dollars$

$3t + 7(29) = 240.5 \\$

3t + 203 = 240.5

3t = 37.5

t = 12.5 dollars

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4 years ago

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