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3 years ago

9

How much is 15x6 and 6x7?

2 answers:

ycow [4]3 years ago

8 0

Answers down below:

15*6 = 90
6*7 = 42

Nonamiya [84]3 years ago

6 0

15 x 6 = 90

6 x 7 = 42

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Yoo help a girl out!!! During a snowstorm, Robert tracked the amount of snow on the ground.

nlexa [21]

Answer: Ok, so make a graph on paper. On the vertical line put inches of snow going up by one. Then your horizontal line should be hours. For the first two hours make the line go up steadily by one. Then make your line flat for five hours. Then for another six hours make the line go up by two per hour.

Please mark brainliest.

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3 years ago

Please help i will give brainliest to who is correct

Svetach [21]

Answer:

b=7

Step-by-step explanation:

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3 years ago

Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for t

rjkz [21]

Answer:

COV (all stocks) = 0.55

COV (stocks and bonds) = 0.82

Step-by-step explanation:

Coefficient of Variation is used to measure variability.

It is defined as the ration of standard deviation and the mean.

It can be used to compare variability of two population or two samples.

Formula:

$\text{Coefficient of Variation} = \displaystyle\frac{\text{Standard Deviation}}{\text{Mean}}$

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

x: 14, 0, 39, 25, 32, 27, 28, 14, 14, 15

$Mean = \frac{208}{10} = 20.8$

$Standard~Deviation = \sqrt{\frac{1169.6}{9} } = 11.39$

$Coefficient~of~Variation = \frac{11.39}{20.8} = 0.55$

y = 6, 2, 29, 17, 26, 17, 17, 2, 3, 5

$Mean = \frac{124}{10} = 12.4$

$Standard~Deviation = \sqrt{\frac{924.4}{9} } = 10.13$

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Since coefficient of variation of x is less compared to y, thus it could be said bonds does not reduce overall risk of an investment portfolio.

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3 years ago

4 pounds covers434 sq ft how many pounds needed for 6944 square feet

Ivenika [448]

Answer:

You would need 64 pounds.

STEP BY STEP EXPLANATION:

4 pounds covers 434 sq ft

434 goes into 6944, 16 times

16 x 4 = 64

I hope this helps :)

Have a nice day!

6 0

3 years ago

Derivative of cos(4x)

son4ous [18]

D/dx ( cos (4x)) = - sin (4x) · d/dx ( 4x) = - 4 sin (4x)

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3 years ago