Let x = number of cups drank per week
let y = number of gallons drank per week
x = 1 cup x 7 days
x = 7 cups per one week
y = 7 cups per week x 0.0625 gallons
y = 0.4375 liquid gallons each week
Therefore Pheneg-Xu drinks 0.4375 liquid gallons each week
Answer:
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Step-by-step explanation:
every triangle must equal 180 degrees so add the other two angles and subtract by 180 to get that angle
Hope this helps :)
28.80 + .20X = X
.20X = X - 28.80
1/5 = .20
X/5 = X -28.80
X = 5X - 144
Set the new X equal to the original X
28.80 + .20X = 5X - 144
172.8 + .20X = 5X
172.8 = 4.8X
36 = X
36$ is the original price
To check,
28.80 + (.20 x 36) = 36
28.80 + 7.2 = 36
36 = 36
9x + 3 = 7x +19
2x + 3 = 19
2x = 16
x = 8
So, x (8) is the number of chairs in each row with these setups.
Plug 8 into one of the equations and you will find how many chairs total there are.
9(8) + 3 = 75
There are 75 chairs total
