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02-06-2018
Mathematics

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Find the area of a triangle with base of 3x + 5 ft and a height of 5x ft.

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02-06-2018

[tex]\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=3x+5\\ h=5x \end{cases}\implies A=\cfrac{1}{2}(3x+5)(5x) \\\\\\ A=\cfrac{1}{2}(15x^2+25x)\implies A=\cfrac{15x^2+25x}{2}[/tex]

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