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BaLLatris [955]
3 years ago
13

What would the missing value be?

Mathematics
1 answer:
Dafna11 [192]3 years ago
6 0

Answer:

x = 9

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (2, 6) and (x₂, y₂ ) = (x, - 5 )

m = \frac{-5-6}{x-2} = \frac{-11}{x-2} , then

\frac{-11}{x-2} = - \frac{11}{7} ← numerators are equal, so equate the denominators

x - 2 = 7 ( add 2 to both sides )

x = 9

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Answer:

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Step-by-step explanation:

2x² + 3x + 3 = 20​

⇔ 2x² + 3x + 3 - 20 = 0

⇔ 2x² + 3x - 17 = 0

<u>Using the Quadratic Formula to solve a Quadratic Equation</u> :

x= \frac{-b \pm \sqrt{b^{2}-4ac} }{2a}

In the equation 2x² + 3x - 17 = 0

a = 2  ,  b = 3  and c = -17

Then

b² - 4ac = 3² - 4×2×(-17)

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Then

b² - 4ac > 0

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x= \frac{-3 \pm \sqrt{145} }{2 \times 2}

Then

x= \frac{-3 \pm \sqrt{145} }{4}

8 0
1 year ago
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Step-by-step explanation:

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