50 POINTS Given ∠A and ∠B are vertical angles with m∠A=50x+10 and m∠B=70x−10 .

What is x?

x = 1

Step-by-step explanation:

Because ∠A and ∠B are vertical angles, they are equal hence we can write

∠A = ∠B

50x + 10 = 70x - 10

Now, you have to solve for x

subtract 50 on both sides

10 = 20x - 10

add 10 to both sides

20x = 20

divide 20 on both sides

x = 1

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)