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andre [41]
3 years ago
8

Suppose you want to factor the expression x2+ 2xn+n2. Given that n> 0, what are the factors? Explain.

Mathematics
2 answers:
cestrela7 [59]3 years ago
4 0

Answer:

\left(x+n\right)^2=(x+n)(x+n)

Step-by-step explanation:

\:x^2+\:2xn+n^2

\mathrm{Perfect\:Square\:Formula}:\quad \left(a+b\right)^2=a^2+2ab+b^2

\left(x+n\right)^2=(x+n)(x+n)

spin [16.1K]3 years ago
3 0

Answer:

(x + n)^2

Step-by-step explanation:

Okay! Let's get this going!

(x + n ) ^2 is correct because first we get

x^2 and n^2. Yet we need to add one more part to this to make it true which is x * n. We multiply this by two since according to the formula (a + b)^2 = a^2 + 2ab + b^2

:)

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Given that z is a standard normal random variable, find z for each situation. The area to the right of z is .1314. (Round to two
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Answer:

P(Z>0.1314) = 1-P(Z

We can use the following excel code: "=1-NORM.DIST(0.1314,0,1,TRUE)"  or the standard normal table

P(Z

We can use the following excel code: "=NORM.DIST(0.75,0,1,TRUE)"  or the standard normal table.

P(Z>0.01) = 1-P(Z

We can use the following excel code: "=1-NORM.DIST(0.01,0,1,TRUE)"  or the standard normal table

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

P(Z>0.1314) = 1-P(Z

We can use the following excel code: "=1-NORM.DIST(0.1314,0,1,TRUE)"  or the standard normal table

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P(Z>0.01) = 1-P(Z

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