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iren2701 [21]
3 years ago
7

Need help ASAP please

Mathematics
1 answer:
pochemuha3 years ago
7 0

Answer:

B

Step-by-step explanation:

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Which of the following is the result of completing the square for x2 + 8x - 6 ?
melamori03 [73]
STEP 1- since 6 doesn't contain the variable to solve for move it to the right side of the equation by subtracting 6 from both sides
X^2-8X=-6
STEP 2- create a trinomial square on the left side of the equation find the value that is equal to the square of half of b the coefficient of x 
(b/2)^2 =(-4)^2
STEP 3- add the term to each side of the equation
x^2-8x+(-4)^2=-6=(-4) 
STEP 4- simplify the equation
x^2-8x+16=10 
STEP 5- factor the perfect trinomial square into (x-4)^2
(x-4)^2=10
STEP 6-solve the equation for x
x=4= square root of 10

 
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3 years ago
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Isolate the variable by dividing each side by factors that don't contain the variable.
x = −1
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3 years ago
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Use the formula for the area of a rectangle, A = lw, where A represents the area, l represents the length, and w represents the
IgorLugansk [536]

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Explain how the segment addition postulate can be modeled using a real-world object
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The average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00. Assuming a normal distribution, if 77 percent
jek_recluse [69]

Answer:

22.97

Step-by-step explanation:

Given that the average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00.

Let x be the average cost an IRS Form 1040 tax filing at Thetis Tax Service

P(X is given

From std normal distribution table we find 77th percentile z value.

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Simplify to get

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8 0
3 years ago
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