Answer:

Step-by-step explanation:
use the formula 
so you would get
Those negatives becomes a positive and you get 4+8 = 12 and 0+7 = 7
you final answer would be 
Answer:
sin^-1 (√111)/2√37) = 60°
Answer:
For instance, say you pay $8,000 for goods and sell them for $10,000. Your gross profit is $2,000. Divide this figure by the total revenue to get your gross profit margin: 0.2. Multiply this figure by 100 to get your gross profit margin percentage: 20 percent.
Step-by-step explanation:
Answer:
Supplementary angles
Step-by-step explanation:
Angles 1 and 2 form a straight line which is 180 degrees.
They are supplementary angles