2 years ago

Divide 315ml in the ratio 2:7

1 answer:

4 0

315 divide by 9= 36
2*36=72
7*36= 252
72:252

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lora16 [44]

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vagabundo [1.1K]

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$\left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] *\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right]=$

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$\left[\begin{array}{ccc}-2(-2)+1*1&-2*4+1*3\\3(-2)+7*1&3*4+7*3\end{array}\right] =\left[\begin{array}{ccc}5&-5\\1&23\end{array}\right]$

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2 years ago