Question

If m∠4 = (3x)° and m∠8 = (x + 40)°, what is the measure of ∠4?

∠4 and ∠8 are vertical.

Answer 1

Answer:

Step-by-step explanation:

∠4 and ∠8 are vertical

So ∠4 + ∠8 =90°

3x+x+40=90°

4x=50°

x=50/4=12.5°

m∠4=3*12.5=37.5°