The formula for the midpoint is:
(x1 + x2)/2, (y1 + y2)/2
Midpoint = (5+3)/2 , (7+1)/2
Midpoint = 8/2 , 8/2
Midpoint =(4,4)
Volume = ( length x width x height ) / 3
For the pyramid in the picture, it would be ( s x s x h ) / 3
4/9 plus 2/5 would be 38/45, and the work is you must change the denominators to the same thing, so you do 4/9 * 5/5, like, multiply the top and the bottom by 5, to get you 20/45, and then for 2/5, multiply the top and the bottom by 9, to get 18/45, add them to get 38/45, and it can't be simplified.
Answer:
The fox; 23 miles per hour
Step-by-step explanation: