Answer:
870.48
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
the average of 9, 8 , and 7 is 8
Answer: the answer is D.
x/-2 - 17 = -7 (subtract both sides by -17)
x/-2 = 10 (multiply both sides by -2)
x = -20
Answer:
27. C
28. D
Step-by-step explanation:
The average of all grades in his fencing class, including the upcoming one, (all grades summed up divided by the amount of grades) must be equal to 86 (percent), hence C is the right answer for 27.
Solving this equation gives:

So D is the right answer for 28.
The answer is one quarter which written as a decimal is .25