Step-by-step explanation:
3(x+3)=12
3x+9=12
3x=12-9
3x=3
x=1
Another way to solve this is to use the Midpoint Formula. The midpoint of a segment joining points
and
is
So the midpoint of your segment is
Perhaps it helps to see that the x-coordinate of the midpoint is just the average of the x-coordinates of the points. Ditto for the y-coordinate of the midpoint; just average the y's.
This equation if finding x would be 88
Step-by-step explanation:
30 minutes x an hour and half past prolly around 1 hr and 30 sec