Mean is adding all them up and then dividing by how many there are. the answer is 12
Answer: X=1/4 or X=0.25
Step-by-step explanation:
-3+12x
Bring the 3 to the other side to isolate x
12x=3
Divide both sides by 12
x=0.25
Tommy’s class rank dropped 10 %
Answer:
17496
Step-by-step explanation:

first x = 24, y=3
24= k * 9
k = 24/9
now,
x= 24/9 * 81^2 = 17496