Question

PLEASE HELLLP.

Find the value of x
a.75
b.70
c.60
d.80

Answer 1

A. 75

Explanation:

I got A. 75 because

2x + 30 = 180

- 30 - 30

2x = 150

/2 /2

x = 75

So the answer would be A. 75

Answer 2

Answer: 75°

Explanation:

The diagram above shows an isosceles triangle because it has 2 equal sides, therefore the two base angles must also be equal.

Hence;

x° + x° + 30° = 180 ( sum of the interior angle of a triangle)

2x° + 30° = 180°

collect like terms

2x° = 180° - 30°

2x° = 150°

Divide bothside by 2

2x°/2 = 150°/2

x° = 75°