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Simora [160]
3 years ago
13

Find x such that 2x^2 +2x=12

Mathematics
1 answer:
solmaris [256]3 years ago
4 0

Answer:

2 and -3

Step-by-step explanation:

2x^2=4x

4x+2x=12

6x=12

how many times does 6 go into 12?

right, 2 times!

x=2

---

2x^2+2x-12=0

x^2+x-6=0

(x+3)(x-2)=0

X=-3 and 2

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Angle SRT is equal to 79 degrees

Step-by-step explanation:

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1) Find x, if 1/3 of x is 14
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"of" means multiply      and         "is" means equal

1. \frac{1}{3}x = 14

                                x = 14(3)      <em>multiply both sides by 3 to isolate "x"</em>

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2. \frac{1}{5}x = 14

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3. \frac{2}{5}x = 14

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                                2x = 70

                                  x = 35         <em>divide both sides by 2 to isolate "x"</em>

4. \frac{7}{8}x = 14

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                                7x = 112

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Answers: 42, 70, 35, 16

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The answer would be A

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