Answer:
210 cm2
Step-by-step explanation:
Do you mean 5+7?
If so, that equals 12!
Answer:
B : -2
Step-by-step explanation:

Answer:
75
Step-by-step explanation:
Let x be the total points
66/x = 0.88 (88%)
x = 75
Mean means average, so you would add the numbers up and divide by the amount of numbers in the set.