75% ended the race
25-18=6
6 goes into 24 4 times so it is 25% that did not finish
100%-25%=75%
So 75% finished the race
It would be 48in because 4 times 6 is 24 and 24 times 2 is 48
Lennon used the property o addition
Supplementary angle = 180
180 - 51 = x
x = 129
C) 129 degrees is your answer
hope this helps
Answer:
a quadrilateral is a four sided shape that has four straight sides