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3 years ago

The variance of a stock's returns can be calculated as the:

Mathematics

1 answer:

Tamiku [17]3 years ago

4 0

Answer:

The correct option is b.

Step-by-step explanation:

The formula for standard deviation is

$\sigma^2=\frac{\sum {(x-\overline{x})^2}}{n}$

where, $\overline{x}$ is mean of the data and n is number of observation.

The variance of a stock's returns can be calculated by the above formula.

Variance of stock's returns is the average value of squared deviations from the mean.

Therefore the correct option is b.

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2log2 8 – 3 logs 25 + 2x = log 10,000 may you show the steps please

anzhelika [568]

Answer: x=2 - 1/2 x ㏒(16/2953125)

Step-by-step explanation:

log (28^2) + log(525^-3) + 2x=log(10^4)
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log(28^2/525^3) + 2x=4
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3 years ago

Free points, solve 4b+5b=8b-1+3b+15?

vazorg [7]

Answer: Hi!

First, we should combine like terms:

4b + 5b = 8b − 1 +3b + 15 =

9b = 11b + 14

Now, we should subtract 11b from both sides.

-2b = 14

Now, we should divide both sides by -2.

b = -7

Hope this helps!

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3 years ago

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3 years ago

-7(n - 2) + 2n = -5(n + 6)

skad [1K]

Given the expression below

$-7(n-2)+2n=-5(n+6)$

To find n

Open the brackets

$\begin{gathered} -7(n-2)+2n=-5(n+6) \\ -7n+14+2n=-5n-30 \\ -7n+2n+14=-5n-30 \\ -5n+14=-5n-30 \end{gathered}$

Collect like terms

$\begin{gathered} -5n+14=-5n-30 \\ -5n-(-5n)=-30-14 \\ 0\ne-44 \end{gathered}$

Since, the sides are not equal,

Hence, there is no solution

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1 year ago

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Umnica [9.8K]

Answer:

A,B,D

Step-by-step explanation:

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3 years ago