Step-by-step explanation:
540 espero que que ayude UWU
Answer:

Step-by-step explanation:
we have

we know that

Answer:
x = 4 or x = 12
Step-by-step explanation:
Given:
y = -10x² + 160x - 430
When y = $50
50 = -10x² + 160x - 430
50 + 430 = -10x² + 160x
480 = -10x² + 160x
-10x² + 160x - 480 = 0
Divide through by -10
x² - 16x + 48 = 0
Solve the quadratic equation using factorization method
+48 = -12 × -4
-16 = -12 -4
Therefore,
-12 and -4 are both factors
x² - 16x + 48 = 0
(x - 4 )(x - 12 ) = 0
x - 4 = 0
x = 4
OR
x - 12 = 0
x = 12
You need to divide 658 by 120 because you know one gallon covers 120 square feet.
Answer:
24
Step-by-step explanation:
To figure out what the value of y is, we must isolate the variable. To do this, we need to use the division property of equality which says that when you divide on one side of the equal sign, you must also divide on the other side.
8y/8 = y
12/8 = 1.5
This tells us the value of y, so next we have to apply this into the problem
8(1.5) = 12
12 + 12 = 24
24 is your answer