Answer:
1/2, 1/4 & 3/4
Step-by-step explanation:
mean of 0 &1 is
mean of 0 and 1/2 is 
mean of 1/2 and 1 is 
So the three rational numbers are 1/2, 1/4 & 3/4
Answer:
Chris still owes Kate $18
Step-by-step explanation:
measure of exterior angle = sum of 2 non adjacent angles
4X = 90 + X
3X = go
X=30
exterior angle = 30x 4 =120