Hello ^ Please help! Thanks

Mathematics

2 answers:

Ivan2 years ago

8 0

The angle measure of a straight line is 180°, and so if the you know that one angle off of it is (5x)°, then you know that the other section is (180 - 5x)°.

Because it's an isosceles triangle, there are two identical angles, which happen to be the angles with the measure of (5x - 30)° and (180 - 5x)°.
Since they have the same measure, 5x - 30 = 180 - 5x. Solve:

$5x-30=180-5x\\\\10x=210\\\\x=\frac{210}{10}=21$

Thus, x = 21°.

AURORKA [14]2 years ago

6 0

The answer is x = 21°

I hope I helped :)

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