Ana wants to find the fifth term of a sequence -12, -7, -2, 3 witch concept will you suggest to be used a. geometric sequence
b. fibonacci
c. arithmetic sequence
d. harmonic

Ana should use Arithmetic sequence because in this sequence there is successive addition of 5.

so,

5th term = a + (5 - 1)d

where, a is the first term, and d is the common difference.

a = -12 ( first term )

d = 5 ( -7 - (-12 ) = -7 + 12 = 5 )

so,

5th term :

=》 -12 + (5 - 1)5

=》 -12 + (4 × 5)

=》 -12 + 20

=》 8

hence, 50 th tem of the sequence is 8

Arithmetic sequence

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

70.30

step-by-step explanation: