Question

Given ∠A and ∠B are vertical angles with m∠A=20x+10 and m∠B=30x−10 .

Answer 1

Answer:

9

Step-by-step explanation:

Answer 2

Answer:

since angle a and b are vertical angles

therefore we can say that,

i) <A=<B

or,20x+10=30x-10

or,10+10=30x-20x

or,20=10x

.°. x=10.