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sergey [27]
3 years ago
8

The area of a square can be represented by the trinomial 9x^2 - 54x + 81. Which of the following is the length of one side of th

e square?
*free response question
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
3 0

Use\ (a-b)^2=a^2-2ab+b^2\\\\9x^2-54x+81=\underbrace{(3x)^2-2(3x)(9)+9^2}_{(*)}=(3x+9)^2\\\\\text{The formula of an area of a square with a side x:}\ A=x^2.\\\\\text{Therefore we have answer:}\ The\ length\ of\ side\ of\ the\ square\ is\ 3x+9.

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tresset_1 [31]

P=s1+s2+s3

Move +s1 to the other side. Sign changes from +s1 to -s1

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p-s1=s2+s3

Move s2 to the other side. Sign changes from s2 to -s2

p-s1-s2=s2-s2+s3

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3 years ago
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ch4aika [34]
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3 years ago
The camp will pay you $48.23 each day for 8 weeks. If you work 5 days each wee , how much money will you make this summer ?
AlekseyPX

Answer:$1,929.20

Step-by-step explanation:First off, I noted that the answers are pretty far apart so I rounded up to $50 to make it simpler (you should only do this if the answers are pretty far apart from one another.)

$50 per day × 5 days per week × 8 weeks = $2,000. Closest answr (because I rounded) is $1,929.20.

3 0
3 years ago
Read 2 more answers
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SVEN [57.7K]
The answer is the store has 240 melons.
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8 0
3 years ago
PLEASE HELLPP!!!
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