Which of these shows 9 + 4p rewritten using the commutative property of addition?

2 answers:

7 0

9 + 4p

rewritten using the commutative property of addition = 4p + 9

answer 4p + 9 (first choice)

Eddi Din [679]3 years ago

4 0

Answer:

Option (1) $4p+9$

Step-by-step explanation:

Commutative property of addition states that while adding two real numbers m and n, the order of adding doesn't matter, i.e. we can add, m and n as $m+n$ as well as $n+m$ .

So, we can conclude that the commutative property of addition states that there will be no impact of ordering the terms.

Now, we have $9+4p$

So, by the commutative property of addition we can say that $4p+9$ is same as $9+4p$ .

Hence, the expression shown in option (1) is correct.

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true or false If x represents a random variable with mean 114 and standard deviation 40, then the standard deviation of the samp

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Answer:

$\mu = 114, \sigma = 40$

We also know that we select a sample size of n =100 and on this case since the sample size is higher than 30 we can apply the central limit theorem and the distribution for the sample mean would be given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$