21.07 beacuse when you add them all up you get that..
Answer:
Sue must score 94 on the final test to earn a B.
Step-by-step explanation:
There are five tests in total.
Sue's average on the first four tests is 84.
If after the final test, she scores X, she will have a B on average of five tests.
We have the following equation:
86 = (4 × 84 + X)/5
<=> X = 5 × 86 - 4 × 84
=> X = 94
Answer:
12×6×2+6×5×2+12×5×2= 324m^2
Answer:
It a choose so the answer is D
