A rectangle has dimensions $x + 10$ and $5x - 4$, where $x$ is in centimetres. If the area of the rectangle is 72 cm$^2$, what is the value of $x$, to the nearest tenth of a centimetre?
Added by Douglas S.
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In this case, the area is given as 72 cm^2, so we can set up the equation: A = (x+10)(5x-4) = 72 Show more…
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