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3 years ago

Can someone help me and explain it

Mathematics

1 answer:

ASHA 777 [7]3 years ago

8 0

Answer:

2.28 x 10^10

Step-by-step explanation:

(3.8 x 10^6) (6 x 10^3) do distributive property 3.8 to 6 and 10^6 to 10^3

22.8 x 10^9 since its 22.8 you have to make it in "once" place, therefore, move the decimal to the left and add the exponent "1"

2.28 x 10^10 is the answer

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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

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

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

$Coefficient~of~Variation = \frac{10.13}{12.4} = 0.82%$

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.

6 0

3 years ago

Find the vertex and symmetry for each problem.

mihalych1998 [28]

Solve the equation for

by finding

, and

of the quadratic then applying the quadratic formula.

Exact Form:

−

√

Decimal Form:

−

0.18350341

…

−

1.81649658

…

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3 years ago

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Degger [83]

Answer:

4y²+112y+10

Step-by-step explanation:

not rly sure ya :)

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3 years ago

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sammy [17]

Answer:

965.11

Step-by-step explanation:

take 27.2 divide it by 2 then use the formula v= 3.14 r to the power of 2 then times it by h.
$3.14 \times 13.6 {}^{2} \times 11.3$

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iogann1982 [59]

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