A triangle has a base length of (x-8)cm  and a height of 2x cm. If the area is 20cm² calculate the height and base length.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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A triangle has a base length of (x-8)cm  and a height of 2x cm. If the area is 20cm² calculate the height and base length.

It's studying for a test and the answer is H=20 and B=2 but I don't know how to solve it please make an easy explanation. Thanks!

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