Question

5. It is given that -2,4, a, b and care five consecutive terms of a geometric progression. Find the value of c.

Answer 1

Answer:

c = - 32

Step-by-step explanation:

The common ratio r of the sequence is

r = $\frac{a_{2} }{a_{1} }$ = $\frac{4}{-2}$ = - 2

To find the next term in the sequence multiply the previous term by r

a = 4 × - 2 = - 8

b = - 8 × - 2 = 16

c = 16 × - 2 = - 32