You are given 2/3 angles to solve for x;
24+56 = 90
90 + x = 180
x = 90 degrees
<span>M1=[<span>(4a+0)/2 <span>,(4b+0)/2] = (2a, 2b)
</span></span></span>M2=[(4c+4d)/2 ,(4b+0)/2] = [2(c+d) , 2b]
answer
coordinate points (x,y) :
(2a, 2b) , [2(c+d) , 2b]
The half life would be about 3 so making the percentage About 25%
125 divided by 5 is 25. hope this helped but im not to sure what friendly parts are sorry