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irinina [24]
3 years ago
12

Find the mode of this data set: 31, 30, 32, 31, 30, 31, 32, 33, 30, 31, 31, 30, 32

Mathematics
1 answer:
MariettaO [177]3 years ago
4 0

Answer:

31 is the mode of the data as it appears 5 times

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Coefficient of b in expansion of (3+b)^4
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Are you sure you want ONLY the coefficient of b?  If you expand this, you will have b in 3 of 4 terms.

According to Pascal's Triangle, the coefficients of (a+b)^4 are as follows:

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                   1      3    3     1
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So (a+b)^4 would be 1a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + b^4

Here, you want (3 + b)^4.  Here's what that looks like:

3^4 + 4[3^3*b] + 6[3^2*b^2] + 4[3*b^3] + 1[b^4]

Which coeff did you want?
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Step-by-step explanation:

2/5+7/8

(2*8/5*8)+(7*5/5*8)

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