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Nataly [62]
3 years ago
7

How do I solve 3x (x-9)

Mathematics
2 answers:
tiny-mole [99]3 years ago
5 0
Well x stands for an unknown number. So lets say the value of x is 11 you would do 11=9 3x 11 and then multiply 33 x 2
Svetradugi [14.3K]3 years ago
5 0
3x(x-9)

3x^2-27x << Is the answer :) by multiply 3x to x and -9

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Fuel x costs $2 per gallon and fuel y costs $3 per gallon. You have at most $18 to spend on fuel. Write a system of linear inequ
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The answer is :

x + y ≤ 14

2x + 3y ≤ 18

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the relationship between money earned and hours worked is linear. joe computes the slope between (4, 30) and (12, 90), then comp
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Slope = rise/run =[y2-y1]/[x2-x1]

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6 0
3 years ago
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CaHeK987 [17]
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OverLord2011 [107]
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3 years ago
Find the values of x when y=1
kirill [66]

Answer:

x=1+\sqrt{5}, 1-\sqrt{5}

Step-by-step explanation:

  1. x^{2} -2x-4=0
  2. (x-1)^{2} -1-4=0
  3. (x-1)^{2} -5=0
  4. (x-1)^{2} =5
  5. x-1=\sqrt{5} ,-\sqrt{5}
  6. x=1+\sqrt{5} , 1-\sqrt{5}

<u>FINAL ANSWER</u>

x=1+\sqrt{5} , 1-\sqrt{5}

<u><em>In Decimal Form (Rounded to 3 significant figures)</em></u>

<em>x≈-1.24, 3.24</em>

6 0
4 years ago
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