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Vedmedyk [2.9K]
2 years ago
5

What does k equal to? -38=-0.4k

Mathematics
1 answer:
Lemur [1.5K]2 years ago
7 0

Answer:

k=95

i don't really know how to explain it! Just try matching the questions up yourself :)

multiply -.4*95 to see if the result is -38

I'm 99.99999999999% percent sure it is right

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For the Data Set below, calculate the Variance to the nearest hundredth decimal place. (Do not use a coma in your answer) 175 34
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Answer:

The variance of the data is 29966.3.

Step-by-step explanation:

The given data set is

175, 349, 234, 512, 638, 549, 500, 611

We need to find the variance to the nearest hundredth decimal place.

Mean of the data

Mean=\dfrac{\sum x}{n}

where, n is number of observation.

Mean=\dfrac{3568}{8}=446

The mean of the data is 446.

Variance=\dfrac{\sum (x-mean)^2}{n-1}

Variance=\dfrac{(175-446)^2+(349-446)^2+(234-446)^2+(512-446)^2+(638-446)^2+(549-446)^2+(500-446)^2+(611-446)^2}{8-1}

Variance=\dfrac{209764}{7}

Variance=29966.2857

Variance\approx 29966.3

Therefore, the variance of the data is 29966.3.

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3 years ago
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Step-by-step explanation:

1/3=2/6

2/6+5/6=7/6

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