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Julli [10]
3 years ago
13

Complete the square for 3x^2-6x=21. leave your answer in the form (____)^2=(____)

Mathematics
2 answers:
jarptica [38.1K]3 years ago
6 0
X^2-2x=7
x^2-2x+1=7+1
(x-1) ^2=8
Mrac [35]3 years ago
3 0

Answer: (x - 1)² = 8

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

3x² - 6x = 21

<u>÷3 </u>  <u> ÷3 </u>  <u> ÷3 </u>

 x² - 2x = 7

x² - 2x + ___ = 7 + ___

     ↓         ↑              ↑

   \frac{-2}{2} = (-1)^{2}

x² - 2x + <u> 1 </u> = 7 + <u> 1 </u>

    (x - 1)²     =  8

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using the midpoint formula, solve for the midpoint of the segment with these pairs of endpoints (-11,30) and (-26,-2)​
REY [17]

Answer:

Midpoint is (\frac{-37 }{2},  14)

Step-by-step explanation:

Midpoint = (\frac{x_{1} + x_{2} }{2}, \frac{y_{1} + y_{2} }{2})

              = (\frac{-11 -26}{2}, \frac{30 - 2 }{2})

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Q. A customer wants to re-carpet a living room andhallway. You charge $5.99 per square yard toremove old carpet and $4.50 per sq
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Carpet removing rate is 5.99 per sq yd.

Removing rate would be:

44.22 * 5.99 = $264.88

Assuming you gotta install both carpet and pad,

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44.22 * 19.99 = $883.96

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4 0
1 year ago
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