The midpoint of (3,4) and (5.5,0)

(4.25,2)

Step-by-step explanation:

To find the x coordinate of the midpoint, add the x coordinates and divide by 2

x = (3+5.5) /2 = 8.5/2 =4.25

To find the y coordinate of the midpoint, add the y coordinates and divide by 2

y = ( 4+0)/2 = 4/2 =2

ratio is 2 : 9

the answer is three

13.5 : 3