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sveticcg [70]
3 years ago
10

What is the factor coefficient variable of 5c-15

Mathematics
2 answers:
poizon [28]3 years ago
8 0

To find the factor coefficient variable, you would divide the numbers by a number that could be divisible for both numbers. In the case, the number you going to be dividing with is 5.

When you divide, your equation would look like this:

\frac{5c-15}{5}

When you divide the numbers by 5, you would end of up with 5(c-3).

Your answer would be 5(c-3).


ivann1987 [24]3 years ago
3 0
15/5 = 3
c=3
3 is your answer
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What is the probability a sample of 90 test takers will provide a sample mean test score within 10 points of the population mean
Elena-2011 [213]

Answer:

0.658 is the probability that a sample 90 test takers will provide a sample mean test score within 10 points of the population mean of 502.

Step-by-step explanation:

The following information is missing:

The standard deviation of population is 100.

We are given the following information in the question:

Population mean, μ = 502

Standard Deviation, σ = 100

Sample size, n  = 90

Standard error =

\dfrac{\sigma}{\sqrt{n}} = \dfrac{100}{\sqrt{90}} =  10.54

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(test score within 10 points)

P(492 \leq x \leq 512) \\\\= P(\displaystyle\frac{492 - 502}{10.54} \leq z \leq \displaystyle\frac{512-502}{10.54}) \\\\= P(-0.9487 \leq z \leq 0.9487)\\= P(z \leq 0.9487) - P(z < -0.9487)\\= 0.829 -0.171 = 0.658 = 65.8\%

P(492 \leq x \leq 512) = 65.8\%

0.658 is the probability that a sample 90 test takers will provide a sample mean test score within 10 points of the population mean of 502.

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Solve this problem please <br> x/3+6-2x=-6
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Answer:

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move x terms to one side and numerical terms to the other, subtract 18 from both sides in this case

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simplify

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divide both sides by -5 to isolate x

x = -36/-5

=36/5

3 0
3 years ago
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