What are the coordinates of the midpoint of the line segment with endpoints a (-12,3) and b (8,-4)? 10, -0.5) (10, 4.5) (-2,4.5) (-2, -0.5)

D.

Step-by-step explanation:

Add the x values and divide by the amount of x's and same with the y's

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles