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March 11, 2026, 10:23:47 pm
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Author Topic: quick question  (Read 648 times)  Share 

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kriptik

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quick question
« on: October 31, 2010, 07:58:35 pm »
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need help on this question please
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sam.utute

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Re: quick question
« Reply #1 on: October 31, 2010, 08:04:20 pm »
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You have to double the distance as the person is going and returning.

So with one marker, the distance travelled is 40m. With 2 markers it is 43m, with 3 it is 46m.
Obviously, there is a arithmetic sequence being followed, with a=40 and d=3.
For 30 markers, the total distance will be calculated via Sum of the first 30 terms.
S(30) = 15 x (80 + 29 x 3)
         = 2505m

Someone correct me if I'm wrong. Not confident.
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kriptik

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Re: quick question
« Reply #2 on: October 31, 2010, 08:06:25 pm »
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your right. thanks asap531
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2009
-It applications [46]
2010
English [28]   Methods (CAS) [43]   Further maths [50]
Physics [41]   Chemistry        [38]
ATAR: 94.35

2011
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