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3 years ago

7

Emily wants to have her Photo album printed

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julsineya [31]3 years ago

6 0

Please provide us with more info, then we'll gladly answer

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2 years ago

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3 years ago

Three friends went running.

son4ous [18]

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2 years ago

3 (x-1) - 8 = 4 (1+x) + 5 Solve it please?

tigry1 [53]

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Step-by-step explanation:

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2 years ago

Suppose y varies directly with x. If y = -4 when x = 8, what is the equation of direct variation?

tresset_1 [31]

$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \textit{we also know that }~~ \begin{cases} y=-4\\ x=8 \end{cases}\implies -4=k(8)\implies \cfrac{-4}{8}=k\implies -\cfrac{1}{2}=k \\\\[-0.35em] ~\dotfill\\\\ ~\hfill y=-\cfrac{1}{2}x~\hfill$

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3 years ago

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