Question

Find the 15 th term of -7,-4,-1

Answer 1

a = - 7

d= - 4-(-7) =3

tn= a+ (n-1)d

t15 = - 7 + (15-1)3

= - 7+ 42

t15 =35

Answer : 35

Answer 2

Answer:

Step-by-step explanation:

A=-7, d= -7 -(-4)= -3

a15= a + 14d

a15 = -7 + 14 (-3)

= -7 + (-42)

= -7 - 42

= -49

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