Answer:
75%
Step-by-step explanation:
57 / (57+19) = 0.75
Answer:
P = 10a +2b+12
Step-by-step explanation:
P = 2 (l+w) for a rectangle
P = 2 ( 4a+b + a+6)
Combine like terms
P = 2(5a+b+6)
Distribute
P = 10a +2b+12
Answer: 5
Explanation: Use a calculator :)