2 years ago

The nth term of a sequence is 3n+5 write down the 5th and 6th terms of the sequence

Mathematics

1 answer:

QveST [7]2 years ago

6 0

Answer:

5th term: 20

6th term: 23

Step-by-step explanation:

T5=3n+5

T5=3(5)+5

T5=15+5

T5=20.

T6=3n+5

T6=3(6)+5

T6=18+5

T6=23

T5= 20

T6= 23

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Tems11 [23]

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2 years ago

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Step-by-step explanation:

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1 year ago

Find the missing terms of the following geometric sequence. Assume all terms are positive. (Hint: The geometric mean of the fi

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2 years ago

Determine the sum of the arithmetic series: 5+18 +31 +44 + ... 161.

Finger [1]

Answer:

1079

Step-by-step explanation:

Hello,

18-5 = 13

31-18=13

44-31=13

161=5+13*12

So we need to compute

$\displaystyle \sum_{k=0}^{k=12} \ {(5+13k)}\\\\=\sum_{k=0}^{k=12} \ {(5)} + 13\sum_{k=1}^{k=12} \ {(k)}\\\\=13*5+13*\dfrac{12*13}{2}\\\\=65+13*13*6\\\\=65+1014\\\\=1079$

Thanks

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3 years ago