Which formula can be used to describe the sequence? - 2/3, - 4, - 24, - 144

Question

Mathematics

Aaden

23 July, 00:59

Which formula can be used to describe the sequence? - 2/3, - 4, - 24, - 144

+2

Answers (2)

Know the Answer?

Cheyenne Hicks · Answer 1

Cheyenne Hicks 23 July, 01:31

0

They are all multiplied by 6

Layton Knight · Answer 2

Geometric sequence.

Step-by-step explanation:

Here are the terms:

-2/3, - 4, - 24, - 144

Now the first term T1 = - 2/3

The second Term T2 = - 4

But T2/T1 = - 4: - 2/3 = - 4 x - 3/2 = 6

Similarly Term 3, T3 = - 24

T3/T2 = - 24/-4 = 6

Hence the expression is a geometric sequence.

a*r^ (n-1); a is the first term

r is the common ratio 6

n is the number of terms.