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Ivahew [28]
3 years ago
12

+12x-7=0 \\" align="absmiddle" class="latex-formula"> give your answer to 2 decimal places
Mathematics
1 answer:
m_a_m_a [10]3 years ago
4 0

Answer:

-2. 46

- 9.54

Step-by-step explanation:

  • 2x²+12x-7=0
  • 2x²+12x+18= 25
  • 2*(x²+6x+9)=25
  • 2*(x+6)²= 5²
  • x+6= 5√2/2 ⇒ x= 5√2/2 -6 ≈ -2. 46
  • x+6= -5√2/2 ⇒ x= -5√2/2 -6 ≈ - 9.54
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mario62 [17]
<h2>Answer:</h2>

w= -8/9

alternative form:

w= -0.8

<h2>Step-by-step explanation:</h2>

3(3w-4)=-20

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9w-12=-20

add 12 to both sides

9w=-8

divide both sides by 9

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w= -8/9

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Step-by-step explanation:

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3 years ago
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vredina [299]

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x=8

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Step-by-step explanation:

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Step-by-step explanation:

find common denominator:

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2 years ago
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