3 years ago

Subtracting: (-3n-6n4+6n3) -(3n3-9n4+n)

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

8 0

Answer:

Step-by-step explanation:

-3n-24n+18n-9n+36n-n = +17

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What? That doesn't make sence! Any way if you mean 1997 to 2014 how many years.

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A mechanic has a radiator hose that measures 32 feet long. It needs to be cut into pieces equaling 5 feet 3 inches. How many who

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6 pieces

Step-by-step explanation:

6x5=30

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stellarik [79]

$\frac{7}{15} + \frac{1}{3} + \frac{3}{5} = \frac{7}{15} + \frac{5}{15} + \frac{9}{15} = \frac{21}{15} = \frac{7}{5} = 1.4$

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The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82,

ozzi

Answer:

Population variance 579

Population standard deviation 24

Step-by-step explanation:

The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142.

The population variance is given by:

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

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This implies that:

$\sigma^2=\frac{(71-\frac{1108}{11})^2+(80-\frac{1108}{11})^2+(82-\frac{1108}{11})^2+(78-\frac{1108}{11})^2+(80-\frac{1108}{11})^2+...+(142-\frac{1108}{11})^2}{11}$

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The population standard deviation is

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Hello,
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Answer D

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