Answer:
Step-by-step explanation:
-3x + 9y = -24
3x + 3y = 24
12y = 0
y = 0
-3x + 9(0) = -24
-3x = -24
x = 8
(8,0)
Answer:
15.2 meters
Step-by-step explanation:
50 ÷ 3.3 = 15.15
We can use a variable equation to solve this. Let A represent alan's age, B represent bob's age, and C represent Cindy's age. So Bob's age would be Alan's age - 5, or a -5 = B. Then Bob's age would be double Cindy's age, so that means 2 multiplied by Cindy's age = Bob's age, or 2C = B. Your two equations are:
A - 5 = B
2C = B
Also a third equation that helps is A + B + C = 20.
Finally, here are the ages.
Alan = 11 years old
Bob = 6 years old
Cindy = 3 years old.
PS: Sorry, I'm not that good at explaining things, but here are the answers
D
It can give some balls more chance to be picked, making it unfair
