A colleague has been tutoring six students in 11th grade to prepare for the ACT. This colleague has asked you to evaluate the performance of his students. Student scores were as follows: 20, 18, 16, 15, 23, 20. The mean of the ACT scores is:

Mean value of the ACT scores

x⁻  = 18.66

Step-by-step explanation:

Explanation:-

Given data

Student scores were as follows: 20, 18, 16, 15, 23, 20.

Mean value or Expected value

  x ⁻ = ∑x/n

Mean value = 18.66

Final -

Mean value of the ACT scores

                           x⁻  = 18.66

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: