0
Step-by-step explanation:
It doesn't matter what 2 points you pick, it will always be 0. For example:
which equals 0.
94
step-by-step explanation:
average the numbers and use a variable to figure out the minimum to get a 90.
(79+94+91+92+x)/5=90
x = 94
ratio is 2 : 9
the answer is three
13.5 : 3