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BartSMP [9]
3 years ago
7

7 less than two times the sum of 6 and a

Mathematics
1 answer:
Sophie [7]3 years ago
3 0

Answer:

(2(6+a))-7

That is your answer!

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Find the quadratic function y=a(x-h)^2 whose graph passes through the given points. (12,-7) and (9,0)
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Answer:

y = (-7/3)(x - 9)

Step-by-step explanation:

<em><u>(12, - 7)</u></em>

y = a(x - h)^2

-7 = a(12 - h)^2

- 7 = a(144 - 24x + h^2)

<em><u>(9,0)</u></em>

0 = a(x - h)^2

0 = a(9 - h)^2

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From (9,0) we can conclude that

a = 0

or

(9 - h)^2 = 0

Let's try the second possibility.

Take the square root of both sides.

9 - h = sqrt(0)

Add h to both sides

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h = 9

So now what we have is

y = a(x - 9)

Use the first equation to get a

-7 = a(12 - 9)

-7 = a(3)

-7/3 = a

Answer

y = (-7/3)(x - 9)

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3 years ago
Tickets for the homecoming football game are being sold for $12 for alumni and $7 for students. The stadium holds a maximum of 5
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