Answer:544/8.50=h
Step-by-step explanation:
544 divided by 8.50 = the number of hours
The answer is 69. the angle is a right angle which means it is 90 degrees. subtract 90-21 to get 69
Solve the second equation for 
, then substitute it into the first equation.
Answer:
B
Step-by-step explanation:
3. ∠1+∠2=180° and ∠2+∠3=180°
4. they are supplementary
5. ∠1+∠2=180°=∠2+∠3
6. ∠1+∠2=180°=∠2+∠3
∠2 are same in both side so ∠1=180°-∠2 =∠3=180°-∠2
7.
