here is the formula. i hope this will help you
Answer:
r = 9 that's your answer.
Hope it's correct, appreciate if you could let me know
Step-by-step explanation:
<span>vertical angles
m<A = m<B
so
</span>4x - 10 = <span>6x - 30
6x - 4x = -10 + 30
2x = 20
x = 10
m<A = </span><span>4x - 10
</span>m<A = 4(10) - 10
m<A = 40 - 10
m<A = 30<span>
</span>
It’s A) 24, this is your answer
