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3 years ago

8

What is a possible value for the missing term of the geometric sequences?

2 answers:

Ganezh [65]3 years ago

8 0

A(n)=ar^(n-1) and we can find the rate upon using the ratio of two points...

50/1250=1250r^2/1250r^0

1/25=r^2

r=1/5 so

a(n)=1250(1/5)^1=250

...

You could have also found the geometric mean which is actually quite efficient too...

The geometric mean is equal to the product of a set of elements raised to the 1/n the power where n is the number of multiplicands...in this case:

gm=(1250*50)^(1/2)=250

babymother [125]3 years ago

6 0

The answer is:

<h2>C) 250</h2>

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