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Oliga [24]
3 years ago
5

(9x+7)(9x-7) what's the answer

Mathematics
2 answers:
MrRa [10]3 years ago
8 0
They cancel each other out because one is + and the other is -.
EastWind [94]3 years ago
4 0

81x^2 - 49. The middle terms cancel out because of the opposing signs, but the answer is 81x^2 - 49

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A home business has an average income of $900.00 per month with a standard deviation of $15.00. If the income in a given month i
Llana [10]
Answer = 2.00

Z score is a statistical that corresponds to the standardization of the regular score to a normal distribution

The formula for Z score is Z = [X - mean ]./ (standard deviation)

Here X = 930.00; mean = 900.00; and standard deviation = 15.00

Then, Z = [930.00 - 900.00] / 15.00 = 30.00 / 15.00 = 2.00

Therefore, your answer is 2.00

Hope I helped :)
3 0
3 years ago
Identify the 33rd term of the arithmetic sequence 9, 7 and one half, 6...
marta [7]

Answer:

  -39

Step-by-step explanation:

The general term of an arithmetic sequence is ...

  an = a1 +d(n -1)

This sequence has first term a1=9 and common difference d=(7.5-9) = -1.5. Then the 33rd term is ...

  a33 = 9 -1.5(33 -1) = 9 -48 = -39

The 33rd term is -39.

5 0
3 years ago
The ans to 3/4+2/3 when using a common denominator to add unlike fractions
pychu [463]

Answer:

17/12 = 1 5/12

Step-by-step explanation:

The common denominator of 4 and 3 is 12.

The equivalent fraction of 3/4 is 9/12.

The equivalent fraction of 2/3 is 8/12.

Their total is 17/12 (or 1 5/12).

5 0
3 years ago
Please help me with this
Tamiku [17]

Answer:

20%

hope it helps you

8 0
2 years ago
Qual é a raiz quadrada de 841?
olga_2 [115]

Answer:

29

Step-by-step explanation:

Convert 189 To A Decimal And Then Round Your Answer To The Nearest Whole Number (29) Is Already Rounded To The Nearest Whole Number So Your Answer Is 29

6 0
2 years ago
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