Is factor and divisor the same thing?

Mathematics

1 answer:

ruslelena [56]3 years ago

4 0

NO. because a factor is multiplied together and a divisor is when you multiply by a quotient

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How to solve -6(8x+20) incorrectly

Veronika [31]

Incorrectly? U wanna get it wrong ?

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3 years ago

tyler sells candy and popcorn. Altogether he sold 15 items. He sells candy for $2 and pop corn $4 and eanred $36. How much candy

9966 [12]

Answer:

candy= 11 popcorn=4

Step-by-step explanation:

11x2=22

4x4=16

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3 years ago

9 Questions/45 points

Finger [1]

You have a lot of questions here, try breaking them up into multiple posts and you may get more responses.

I will help with some.

<span>(x+3)=0

The solution is just -3.
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The two solutions are 0 and 4.
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I hope this gets you started in the right direction.

3 0

4 years ago

The percentage of body fat of a random sample of 36 men aged 20 to 29 found a sample mean of 14.42. Find a 95% confidence interv

Rina8888 [55]

Answer:

$14.42-1.96\frac{6.95}{\sqrt{36}}=12.150$

$14.42+ 1.96\frac{6.95}{\sqrt{36}}=16.690$

So on this case the 95% confidence interval would be given by (12.150;16.690)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

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".

$\bar X=14.42$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=6.95$ represent the population standard deviation

n=36 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$