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lozanna [386]
3 years ago
9

What is the line of symmetry for the parabola whose equation is y = x2 - 12x + 7?

Mathematics
1 answer:
Pavel [41]3 years ago
3 0

Answer:

x = 6

Step-by-step explanation:

Please write this as  y = x^2 - 12x + 7 to indicate the exponentiation.

The coefficients of these three terms are a, b and c:  1, -12 and 7.

The equation of the axis (line) of symmetry is

        -b           -(-12)

x = ---------  =  -----------  = 6

         2a           2(1)

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Step-by-step explanation:

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3 0
3 years ago
Is 5 in the solution of x+3>8?
Ivan

Answer: D) No; If x is 5, the expression on the left simplifies to 8, making the inequality false.

In other words, if x = 5, then x+3 becomes 5+3 which ultimately becomes 8, but this is not greater than 8 on the right side.

Your steps could look like this

x+3 > 8

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8 0
3 years ago
Alan solved the proportion StartFraction x over 200 EndFraction = StartFraction 8 over 25 EndFraction as shown. StartFraction x
bulgar [2K]

Answer:

Step-by-step explanation:

The proportion that Alan solved was

x/200 = 8/25

His working as shown was

(8)(x) = (25) (200)

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He divided both sides of the equation by 8. It became

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x = 625

The correct steps are

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Dividing both sides of the equation by 25, it becomes

x = 1600/25

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Alan's error were:

1) He got the wrong product when he multiplied 25 by 200.

2)He got the wrong quotient when he divided 5,000 by 8.

7 0
3 years ago
Read 2 more answers
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