6nsquared - 5nsquared + 7nsquared simplify the expression

2 answers:

5 0

6n^2-5n^2= n^2

n^2+7n^2= 8n^2

Final answer: 8n^2
Remember that all of these terms are like terms so you can just add/subtract coefficients.

Vitek1552 [10]3 years ago

5 0

The equation is 6n^2-5n^2+7n^2. Since the exponents are the same, you can just add and subtract. 6n^2-5n^2=n^2. N^2+7n^2=8n^2. The answer to this is 8n^2. I hope this helps! :)

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SCORPION-xisa [38]

A) The mean would be 1.842 and the standard deviation would be 1.339.
b) It would not be unusually low.

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b) To determine if this is unusually low, we find the probability:
$_nC_k\times p^n\times (1-p)^{k-n}
\\
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Since this is not below 0.05, we do not consider this unusual.

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