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Alex777 [14]
2 years ago
14

Find the mean: 28, 18, 19, 18, 17 Heh help

Mathematics
2 answers:
kap26 [50]2 years ago
5 0

Answer:

Mean = 20

Step-by-step explanation:

tresset_1 [31]2 years ago
3 0

Answer:

The mean is 20.

Step-by-step explanation:

To find the mean you add up all the numbers in the set (which in this case is 100) then you take the sum and divide that by how **many** numbers are in the set (in this case its 5 numbers) so you end up with 100/5 which equals 20. Hope this helps!

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Determine the difference: 3.2 × 1010 – 1.1 × 1011 Write your answer in scientific notation.
tekilochka [14]

Answer:

-7.8*10^{10}

Step-by-step explanation:

we have

3.2*10^{10} -1.1*10^{11}

we know that

3.2*10^{10}=0.32*10^{11}

substitute

0.32*10^{11} -1.1*10^{11}=-0.78*10^{11}=-7.8*10^{10}

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How many solutions does this system have? y=3/4x-5 -3x+4y=-20?
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