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2 years ago

What is the tenth term in the sequence 9, 13, 17, 21, 25…?

Mathematics

1 answer:

Zinaida [17]2 years ago

6 0

Answer:

Step-by-step explanation:

9, 13, 17, 21, 25

We are adding 4 each time

9+4 = 13

13+4 =17

17+4 = 21

The common difference =4

a1 = 9

The formula is

an = a1+d(n-1) where n is the term number

an = 9+4(n-1)

We want the 10th term

a10 = 9+4(10-1)

= 9+4(9)

= 9+36

= 45

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