Step-by-step explanation:
An=A1. R raised to the power n-1
Im guessing it would be about 50 degrees
Answer:

Step-by-step explanation:
{90° = m∠1 + m∠2
{105° = 2m∠1 - m∠2
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All you have left to do is this:

So, your two angle measures are 
I am joyous to assist you anytime.
Answer:
C
Step-by-step explanation:
First you need to distribute the 2 into each equation and then add like terms. the answer is 6x + 8