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3 years ago

Which of the following is not equivalent to the others?

Mathematics

2 answers:

Marianna [84]3 years ago

8 0

Choice C

Hope that helps :D

Scrat [10]3 years ago

7 0

Let's find the decimal value of each letter choice.

Choice A: This choice is already in decimal value.

Choice B: To turn this into a decimal, divide this by 100%. You get 0.4. This matches with choice A.

Choice C: To turn this into a decimal, divide this by 100%. You get 0.04. This does not match with A and B.

Choice D: 2/5 can be turned into 40/100. 40/100 can be converted into the decimal of 0.4. This matches with choices A and B.

Thus, the only different answer choice is C. That's your answer. I hope this helps! :)

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Answer:

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Step-by-step explanation:

The given series is 26 + 24.5 + 23 + 21.5 + ... - 17.5

The first term of this series is a=26

The common difference is d=24.5-26=-1.5

The last term of the series is -17.5

The nth term is given by:

$u_n=a+d(n-1)$

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$S_{30}=\frac{30}{2}(26+-17.5)$

$S_{30}=127.5$

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Step-by-step explanation:

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