20,000,000+80,000+4,000+78
It's been a while since i learned this..
Answer:
59˚
Step-by-step explanation:
The sum of all the angles in a triangle is always 180 so:
38 + 83 + x = 180
121 + x = 180
x = 59
Yes you should use the first choice
Answer:

Step-by-step explanation:
The answer would be
because
= 
Answer:
<em>b. 5 + 17i</em>
Step-by-step explanation: