Question

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Find the value of x. Then find the mZS and m/T.
Enter your answers in the boxes.
x=
mZS =
mZT =

Answer 1

Explanation:

In a triangle, there are 180 degrees.

180- 31 = 149 degrees

(x + 4) + (3x+9) = 149

x=34

X+ 4 = 38

3x +9 =111

X =34, T=111, S=38

Answer 2

x=34

m∠S = 38

m∠T = 111

Explanation:

Since the angles of a triangle should add up to 180, you can solve this equation:

31 + x+4 + 3x+9 = 180

the solution is x=34

Then the angles S and T can be found by substituting that value for x.