Length of AB=Length of A'B' because they are corresponding sides.
To find the mean you must add all the numbers together and then divide by the number of numbers. So we would divide by 3.
1st: ADD!!
39 + 88 + 95 = 222
2nd: divide by 3!!!
222 ÷ 3 = 74
So your mean number of the given data is 74.
Good Luck! :)
Answer:
f(15) = 49
Step-by-step explanation:
f(x) = 4x - 11
f(15) = 4(15) - 11 (substitute 15 instead of x)
f(15) = 60 -11
f(15) = 49