17-12-2018
Mathematics

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alma is finding the measures of the angles in a triangle that have the ratio 1:3:5. circle her mistake and correct it
x + 3x +5x = 180
8x = 180
x = 22.5

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jimrgrant1 jimrgrant1

17-12-2018

Answer:

error in summing terms in x

Step-by-step explanation:

x + 3x + 5x = 180 ( collect like terms on left )

9x = 180 ← ( 9x not 8x )

divide both sides by 9

x = 20

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