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oksano4ka [1.4K]
3 years ago
15

HELP MEE PLEASEEEE I NEED THE CORRECT ANSWER

Mathematics
1 answer:
Vika [28.1K]3 years ago
3 0
It’s C oof oof oof oof
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Which of the following Platonic solids is also a pyramid? A. tetrahedron B. Hexahedron C. octahedron D. Icosahedron E. dodecahed
tiny-mole [99]
Tetrahedron - its the only one that has a base from which all edges meet at a single point.
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3 years ago
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The variance of a stock's returns can be calculated as the:
Tamiku [17]

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.

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3 years ago
Lee has 3 children, the oldest is twice as old as the oungest, the middle is 5 years older than the youngest, the sum of the chi
tangare [24]
Oldest = 2x
Middle = x + 5
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combine like terms

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subtract 5 from both sides

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divide both sides by 4 to isolate x

x = 13

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8 0
3 years ago
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Maria ran at a rate of 3.4 miles per hour for 6.8 hours. How many miles did she run in total?
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Answer:

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Step-by-step explanation:

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