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Yuliya22 [10]
2 years ago
10

ok so if Tony logs-in 10 hours of gaming a day and his gf Shara says if he doesn't get a job she will leave him for Dave.. now h

ow many hours can Tony log-in now that there are no more distractions?
Mathematics
1 answer:
puteri [66]2 years ago
5 0

Answer:

10 hours

Step-by-step explanation:

shara takes L

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Each book costs $15. 90 divided by 6 is 15 which is also 90 over 6.
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4,1

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What is the standard deviation of the data set? Round to the nearest tenth if needed. 2, 4, 7, 8, 9
barxatty [35]

Hiiiiiiii, okay here's the full- explanation for you, so here's the final answer. The explanation of how i got the answer is also below! Hope this helped you!!

Answer:

2.9

Step-by-step explanation:

First the mean or average = sum / data points (or N) = (2 + 4 + 7 + 8 + 9) / 5 = 6  

Now we take each of the individual values subtract the mean, and then square them, and add it all up.  

(2 - 6)^2 + (4 - 6)^2 + (7 - 6)^2 + (8 - 6)^2 + (9 - 6)^2 = 34  

Then we divide this by degrees of freedom = N - 1 to find the sample standard deviation. Note that this is different from the population standard deviation, where we would just divide N, but we use this because our data set is small, like less than 30 points.  

34 / (N - 1) -----> = 34 / (5 - 1) = 8.5  

Now, this is the variance, so we take the square root of the variance to get the sample standard deviation:  

√(8.5) = 2.9 (rounded to 1 decimal place)  

Note that scientific calculators, even my $20 version can do these kind of statistics calculations. Just enter the data set as a table of values in statistics mode, and press a few buttons, you're done!

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3 years ago
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GrogVix [38]

Answer:

Options (1) and (2)

Step-by-step explanation:

Properties of a polynomial,

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2). A polynomial can't have a negative exponent.

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3). Polynomials don't have the radicals.

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4). A polynomial can't have a fraction exponent.

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By these properties, Options (3) and (4) are not the polynomials.

Options (1) and (2) are the correct options.

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