A triangle has one angle measuring 3x degrees. A second angle is 2x+20 degrees and the third angle measures 4x-20 degrees. What it's the value of x?

Question

Guadalupe Galloway

Mathematics

14 April, 10:51

A triangle has one angle measuring 3x degrees. A second angle is 2x+20 degrees and the third angle measures 4x-20 degrees. What it's the value of x?

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Ming · Answer 1

It is important to know that the sum of the three angles inside a triangle add up to 180 degrees. So then we get the following by adding up all three provided angle measures: 3x + (2x + 20) + (4x - 20) = 180 Some algebraic manipulation follows: 3x + 2x + 20 + 4x - 20 = 180 9x = 180 x = 180/9 = 20 The value of x is 20 degrees.