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Phoenix [80]
3 years ago
11

F(x) = 5x2 - X+ 3 Please help

Mathematics
1 answer:
muminat3 years ago
5 0

Answer:

Step-by-step explanation:

Do you know how to use the quadratic formula?

x = \frac{-b +/- \sqrt{b^2 - 4*a*c} }{2*a}

a = 5

b = -1    

c = 3

x = \frac{1 +/- \sqrt{1 - 4*1*3} }{2}\\x= \frac{1 +\sqrt{-11} }{2}\\x = \frac{1 +/- i\sqrt{11} }{2}

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Which statement about the ordered pair (-6,8) is true?
fgiga [73]

Answer:

a

Step-by-step explanation:

solve for y in one equation

2x + y = -4

y = -4 - 2x

plug y into the other equation

5x + 3y = -6

5x + 3(-4 - 2x) = -6

5x -12 -6x = -6

-x - 12 = -6

-x = 6

x = -6

plug x into the equation to find y

y = -4 - 2x

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y = 8

ordered pair: (-6,8)

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Can anyone solve this for me
emmainna [20.7K]

Answer:

(-2, -4.5)

Step-by-step explanation:

We can solve this equation with substitution.

x=2y+7

3x-2y=3

We can "substitute" 2y+7 for x into the second equation:

3(2y+7)-2y=3

Distribute the 3

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Add like terms

4y+21=3

Subtract 21 from both sides

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Divide both sides by 4 to isolate y

y=-4.5

Plug -4.5 back in for y:

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Answer:

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Step-by-step explanation:

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