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2 years ago

Factor this expression completely mr + ns - nr - ms

Mathematics

2 answers:

Talja [164]2 years ago

8 0

(m - n)(r - s) Hope this helps and heve a nice day!

love history [14]2 years ago

3 0

$mr + ns - nr - ms=\\
mr-nr-ms+ns=\\
r(m-n)-s(m-n)=\\
(r-s)(m-n)$

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Answer:

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2 years ago

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2 years ago

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Step-by-step explanation:

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2 years ago

Read 2 more answers

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erica [24]

Answer:

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And we can find the probability with the complement rule and the normal standard distirbution and we got:

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Step-by-step explanation:

Let X the random variable that represent the time spent reading of a population, and for this case we know the distribution for X is given by:

$X \sim N(49,16)$

Where $\mu=49$ and $\sigma=16$

We are interested on this probability

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And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(X>60)=P(\frac{X-\mu}{\sigma}>\frac{60-\mu}{\sigma})=P(Z>\frac{60-49}{16})=P(z>0.6875)$

And we can find the probability with the complement rule and the normal standard distirbution and we got:

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2 years ago

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Answer:

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2 years ago