Answer:
AB = 59
RS = 6
Explanation:
Hello!
21)
AB is the sum of AC and BC. We can solve for x and plug in the value to find AB.
Solve for x
- 3x + 47 = x + 39 + 16
- 3x + 47 = x + 55
- 2x + 47 = 55
- 2x = 8
- x = 4
Solve for AB
- 3x + 47 = AB
- 3(4) + 47 = AB
- 12 + 47 = AB
- 59 = AB
AB is 59.
23)
RS is the difference of 30 and the sum of 9 and 15.
Solve for RS
- 30 - (9 + 15) = RS
- 30 -24 = RS
- 6 = RS
RS is 6.