Answer:
w = 2, EF = 30 , FG = 42
Explanation:
We have EF = 5w + 20 and FG = 7w + 28
Since these points E, F and G are col-linear points we have.
EG = EF + FG
And given that EG = 72
So, EF+EG = 72
5w + 20 + 7w + 28 = 72
12w + 48 = 72
12 w = 24
w = 2
So EF = 5w + 20 = 5x2 + 20 = 30
FG = 7w + 28 = 7x2 + 28 = 42
No it is NOT possible - that would mean the final angle would also have to be ninety degrees making it a square or rectangle. :)
The total cost is c the you just multiply 14 by the number of hours so it would be C=$14h
A) 70/130*100 = 53.8 %
B) 30/40 = 3/4 = 0.75
hope you have a great day !
