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aleksley [76]
3 years ago
11

Complete the square to solve 3x2 + 12x = 9.

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
5 0

Answer:

C) x = -2 ± \sqrt{7}

Step-by-step explanation:

3x² + 12x - 9 = 0

divide through by 3

x² + 4x - 3 = 0

add 3 to each side

x² + 4x = 3

divide 4 in half and square it; add it to each side of equation

x² + 4x + 4 = 3 + 4

(x + 2)² = 7

x + 2 = \sqrt{7}

x = -2 ± \sqrt{7}

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Answer:

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Step-by-step explanation:

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5 0
4 years ago
How does an earthquake of magnitude 7.9 compare in intensity with an earthquake of magnitude of 3.7 on the Richter​ scale? The l
Andre45 [30]
We are required to compare the magnitude for two earthquake intensity:
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4 years ago
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11Alexandr11 [23.1K]

Answer:

\displaystyle -4 + c < -20

Step-by-step explanation:

You could either do what I did in the above answer, or you could do this:

\displaystyle c - 4< -20

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I am joyous to assist you anytime.

3 0
3 years ago
Ratio ? I’m Not sure
tia_tia [17]
It’s interval. It will be right.
3 0
3 years ago
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Step-by-step explanation:

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