Answer:
x = sqrt(11 - y) - 2 or x = -sqrt(11 - y) - 2
Step-by-step explanation:
Solve for x:
y = -x^2 - 4 x + 7
y = -x^2 - 4 x + 7 is equivalent to -x^2 - 4 x + 7 = y:
-x^2 - 4 x + 7 = y
Multiply both sides by -1:
x^2 + 4 x - 7 = -y
Add 7 to both sides:
x^2 + 4 x = 7 - y
Add 4 to both sides:
x^2 + 4 x + 4 = 11 - y
Write the left hand side as a square:
(x + 2)^2 = 11 - y
Take the square root of both sides:
x + 2 = sqrt(11 - y) or x + 2 = -sqrt(11 - y)
Subtract 2 from both sides:
x = sqrt(11 - y) - 2 or x + 2 = -sqrt(11 - y)
Subtract 2 from both sides:
Answer: x = sqrt(11 - y) - 2 or x = -sqrt(11 - y) - 2
Answer:
-6
Step-by-step explanation:
(-6) squared -36=0
36-36=0
Answer:
<h2> $24</h2>
Step-by-step explanation:
The question is not complete, here is the complete question
"<em>DeMarkus says that a store overcharged him on the price of the video game he bought. He thought that the price was marked 1/4 of the original price, but it was really 1/4 off the original price. He misread the advertisement. If the original price of the game was $48, what is the difference between the price that DeMarkus thought he should pay and the price that the store charged him?"</em>
<h2 /><h2>Solution</h2><h2>Take note of the words "of" and "off" </h2>
1/4 of $48= 0.25*48=$12
so he thought he should pay $12
1/4 off $48= $48-$12= $36
now the difference is
36-12= $24
Answer:
1/2
Step-by-step explanation:
8+(6)(3)^2
8+(6)(9)
8+(54)
8+54
62
I hope it helps
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