dyanes
dyanes
12-11-2017
Mathematics
contestada
What’s the answer please?
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Penguin84
Penguin84
12-11-2017
The answer should be 18/25
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MathisLif3
MathisLif3
12-11-2017
arithmetic sequence, a1+(n-1)d
22/25+(5-1)*-1/25=22/25-4/25=[18/25]
check for n=3 is 4/5
22/25+(3-1)*-1/25
22/25+2/25=22/25-2/25=20/25=4/5
so it works
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