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Paha777 [63]
3 years ago
6

Quick math question....

Mathematics
2 answers:
irga5000 [103]3 years ago
5 0

Answer:

A

Step-by-step explanation:

3^-4=0.0123456789

3^7= 2,187

2,187 times 0.0123456789=27

which is the same as A case closed because a also equals 27

Tema [17]3 years ago
3 0

Answer:

A

Step-by-step explanation:

In this problem, first u would have to keep the base of 3, then multiply the two powers together to get -28.

However, u can't leave a negative power in the numerator, so u bring the base and the power down into the denominator, change the sign of the power to make it positive, and put a 1 in the numerator.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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MArishka [77]

Answer:

The mean is also increased by the constant k.

Step-by-step explanation:

Suppose that we have the set of N elements

{x₁, x₂, x₃, ..., xₙ}

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M = (x₁ + x₂ + x₃ + ... + xₙ)/N

Now if we increase each element of our set by a constant K, then our new set is:

{ (x₁ + k), (x₂ + k), ..., (xₙ + k)}

The mean of this set is:

M' = ( (x₁ + k) + (x₂ + k) + ... + (xₙ + k))/N

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We can rewrite this as:

M' = (x₁ + x₂ + ... + xₙ)/N + (k*N)/N

and  (x₁ + x₂ + ... + xₙ)/N was the original mean, then:

M' = M + (k*N)/N

M' = M + k

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6 0
3 years ago
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Step-by-step explanation:

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