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Vitek1552 [10]
3 years ago
8

Help please!! I need an explanation

Mathematics
2 answers:
marusya05 [52]3 years ago
8 0

Step-by-step explanation:

A triangle's angles add up to be 180 degrees, so you can create an equation to be 180= 130+5x. (the 5x is 2x + 3x)

subtract 130 from both sides and get 50=5x, divide both sides by 5, x is equal to 10.

I'm not sure which angle is angle a, but if you substitute x with 10, you can find the measure of the angle, so if it's 2x, 2(10)=20 and if 3x, 3(10)=30

fomenos3 years ago
3 0
The total sum of angles in a triangle is 180°

2x + 3x + 130° = 180°

5x + 130° = 180°

5x = 180° - 130°

5x = 50°

x = 50° / 5

x = 10

Hope it helps!
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