.50 is the answer I think, hope this helps
Answer:
-7/2 , 8
Step-by-step explanation:
Given, M(-5,9) be x1 , y1
N(-2,7) be x2, y2
Now,
Using mid point formula
x = x1+x2/2 y = y1+y2/2
= -5-2/2 = 9+7/2
= -7/2 = 16/2
= 8
Let s represent speed.

To graph it, draw a number line. Show zero, 20, 50 and arrowheads at both ends. Draw closed circles at 20 and 50 and shade in between.
A constant quiantity places before and multiplying the variable in an algerbaic expression.