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zhuklara [117]
4 years ago
12

What number must you add to complete the square ? X^2+22x=9

Mathematics
1 answer:
SCORPION-xisa [38]4 years ago
4 0

Answer:

121

22/2 = 11

11^{2} = 121

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A sofa depreciates at 20% of its original value each year. If the sofa was $349 at its time of purchase, what is the value of th
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Answer:

$142.95

Step-by-step explanation:

Given Original value of the sofa = $349

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349 \times\left(1-\frac{20}{100}\right)^{4}=349 \times\left(\frac{100-20}{100}\right)^{4}  

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Hence, the value of sofa after 4 years is $142.95.

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