Answer:
z = - 1
Step-by-step explanation:
Given
- 18 = 9z - 9 ( add 9 to both sides )
- 9 = 9z ( divide both sides by 9 )
- 1 = z
So what you can do is lets say you have to multiply 5/6 by 3 you just make 3 into a mixed number 2 6/6 and multiply it like that.
9/19 = x / 152....9 oz oil to 19 gallons gas = x oz oil to 152 gallons gas
cross multiply because this is a proportion
(19)(x) = (152)(9)
19x = 1368
x = 1368/19
x = 72 oz of oil <==
Ratio is 10:16, so to win 50, its 50:190, so you need to play 190 games to win 50
