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Vladimir79 [104]

4 years ago

10

Which is the 9th term of the sequence which has a first term of 1 and has a common ratio of 1.5

2 answers:

noname [10]4 years ago

5 0

Hey!
So what you can do is:
1 x 1.5 = 1.5(2nd term)
1.5 x 1.5=2.25(3rd term) x 1.5=3.375(4th term) x 1.5 = 5.0625(5th term)

5.0625 x 1.5=7.59375(6th term)x1.5=<span> 11.390625

</span>11.390625 x1.5= 17.0859375(8th term)x1.5=<span> 25.62890625</span>(9th term)

The answer is D!
Hope this helps!

Anika [276]4 years ago

3 0

The sequence would go:
1, 2.5, 4, 5.5, 7, 8.5, 10, 11.5, 13, 14.5

The 9th term should be 13

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