Equation:
9+3x=30
Answer:
9+3x=30
Subtract 9 from each side.
3x=21
divide by 3 on each side.
x=7
Each shirt cost $7.
Answer:
y = (x-3)^2 -16
Step-by-step explanation:
y = x^2 -6x-7
We need to complete the square
b= -6
b/2 = -6/2 = -3
(b/2) ^2 = (-3)^2 =9
Add 9 then subtract 9 to balance the equation
y = x^2 -6x +9 -9 -7
y = (x^2 -6x+9) -16
The terms in parentheses is (x-b/2)^2
y = (x-3)^2 -16
This is in vertex form
The vertex is (3,-16)
Answer:
Step-by-step explanation:
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Answer:
3$
Step-by-step explanation:
Because every 3 numbers are divisble by 3 and the other 2 are not. Then the chance of you winning is 66%, therefore he should pay you half of what he would make. If this makes sense.
The answer is 5/n and 5+4n.
"n" represents the unknown number.
