3 years ago

one side of a rectangle is 4cm shorter than three times the other side, find the side lengths if the area is 319

Mathematics

1 answer:

MakcuM [25]3 years ago

5 0

I hope this helps you

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Answer:

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Step-by-step explanation:

Open everything up to get 5x+2x-6=-2x+2. Move numbers with an x to the left side and without to the right to have 5x+2x+2x=2+6. Simplify to have 9x=8. Divide by 9 which leaves you with x= 8/9

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charle [14.2K]

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Step-by-ste:p explanation:

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2 years ago

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3 years ago

Lin ran 2 3/4 miles in 2/5 of an hour. How far would Lin run in 1 hour?

hoa [83]

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Using cross multiplication:

$\begin{gathered} \frac{11}{\frac{4}{x}}=\frac{2}{5} \\ x=\frac{11}{4}\cdot\frac{5}{2} \\ x=\frac{55}{8}mi=6\frac{7}{8}mi \end{gathered}$

Convert a mixed number to a fraction:

$a\frac{c}{b}=\frac{a\cdot b+c}{b}$

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