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dexar [7]
3 years ago
6

Variance 0.7775

Mathematics
2 answers:
nadezda [96]3 years ago
6 0

Answer:

0.88175960442

Step-by-step explanation:

The square root of 0.7775 is 0.88175960442

rewona [7]3 years ago
4 0

Answer:

0.88

Step-by-step explanation:

To find the standard deviation square root the variance,

SD=\sqrt{0.7775}\\ SD= 0.88

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Beth read a total of 12 books over 7 months.
givi [52]

She has been with her book club for 49 months.

Step-by-step explanation:

Books read = 12 books

Time period = 7 months

Therefore,

12 books = 7 months

1 book = \frac{7}{12}\ months    

Books read so far = 84 books

Total time period = x

84 books = x months

1 book = \frac{x}{84}\ months

Using both unit rates;

\frac{x}{84}=\frac{7}{12}\\x=\frac{7}{12}*84\\x=\frac{588}{12}\\x=49\ months

She has been with her book club for 49 months.

Keywords: Unit rates, multiplication

Learn more about multiplication at:

  • brainly.com/question/10699220
  • brainly.com/question/10703930

#LearnwithBrainly

8 0
3 years ago
At work jenine helps 6 customers every 40 minutes. How many customers can she expect to help in 240 minutes before her break?
Lady bird [3.3K]

Answer: 36 customers

Step-by-step explanation:

I'm pretty sure because you have to multiply 40 x 6 which is 240 and 6 x 6 which is 36 to get your answer.

7 0
2 years ago
A given rectangle has an area of 20 ft.² what is the length for various widths
ruslelena [56]
The area of a rectangle is calculated as length times its width. So, for the given area above, the expression should b written as:

20 = LW

To know the length for various measurement of the width, we can write it by:

L = 20 / W

You can substitute any measurement to W and you can obtain the corresponding value of the length.
8 0
2 years ago
The roots of the equation x^2+6x+11=0 are
saul85 [17]
<span>x^2+6x+11=0 
 After solving this u will bet
X=-6+,-</span>√-8/2
So roots of a equation are imaginary
3 0
2 years ago
Factorize completely <br> 81k^2 - m^2
Genrish500 [490]

81k^2 - m^2 factors to

(9k + m)(9k - m)

Prove this by FOILing.

First - 81k^2

Outer - (-9km)

Inner - 9km

Last - (-m^2)

Put it into equation form

81k^2 - 9km + 9km - m^2

And combine terms to get the original equation,

81k^2 - m^2.

⭐ Answered by Hyperrspace (Ace) ⭐

⭐ Brainliest would be appreciated, I'm trying to reach genius! ⭐

⭐ If you have questions, leave a comment, I'm happy to help! ⭐

7 0
3 years ago
Read 2 more answers
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