Question

Look at the figure. Find the value of x.
30
90
45
15

Answer 1

Answer: 15

Step-by-step explanation:

It's an Isosceles triangle meaning both sides are congruent (same)

So with that in mind we can make an equation making them equal to each other to find X.

3x = 5x - 30

Subtract 5x from both sides

-2x = -30

We can't have a negative x so we divide x by a negative

x = 15