Question

Find the missing term in this arithmetic sequence: _,-3x,-10x,-17x,-24x,-31x.
a.-4x
b.-7x
c.7x
d.4x

Answer 1

Answer:

d. 4x is the correct answer..

Answer 2

Answer:

4x

Step-by-step explanation:

Given, arithmetic sequence: _,-3x,-10x,-17x,-24x,-31x

since ,

$tn \: = a + (n - 1)d$

where, tn is a term in arithmetic sequence

a is first term that is t1 and d is common difference that is -7x

we know t2 = -3x ,t1 =?

t2 = -3x = a + (2-1)(-7x)

-3x = a - 7x

a = 4x = t1