santanajmatthew santanajmatthew

02-07-2020
Mathematics

contestada

Find the 8th term of geometric sequence 2,-10,50...

Respuesta :

09pqr4sT 09pqr4sT

02-07-2020

Answer:

- 156250

Step-by-step explanation:

Find the ratio of the geometric sequence.

-10/2 = -5

50/-10 = -5

The common ratio is -5.

Apply the formula.

an = ar^(n-1)

Where a is the first term and r is the ratio.

a8 = 2(-5)^(8-1)

a8 = 2(-5)^7

a8 = 2(-71825)

a8 = -156250

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