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3 years ago

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One step equations 7r= - 7/2

1 answer:

torisob [31]3 years ago

7 0

7r = - $\frac{7}{2}$ Divide both sides by 7 ( $-\frac{7}{2} \div 7 = -\frac {7}{2} x \frac {1}{7}$ )
r = $-\frac{14}{2}$ Simplify
r = -7

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Step-by-step explanation:

see the attached figure to better understand the problem

step 1

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$185^{2}= 215^{2}+125^{2}-2(215)(125)cos(A)$

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