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IgorLugansk [536]
3 years ago
8

Evaluate S5 for 400 + 200 + 100 + … and select the correct answer below.

Mathematics
2 answers:
Strike441 [17]3 years ago
7 0

Answer:


Step-by-step explanation:

This question asks for the sum of the first 5 terms of the series.

Looking at the first 3 terms, we can see that each successive term is half of the one before it.

<em>So next term after 100 would be 50. Next term after 50 would be 25.</em>


Thus, we can write:

400 + 200 + 100 + 50 + 25 + ...

We already have first 5 terms, the sum is:

400 + 200 + 100 + 50 + 25 = 775

Answer choice B is right.

Nadusha1986 [10]3 years ago
5 0
The correct answer is B) 775 

Why 775? Because Assume the series continues.

400+200+100+50+25=775

I hope this helps. 

Have a great day. :)
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