Question

Find the 10th term of the sequence 15 10 5

Answer 1

Answer:

a = 15

d = a2-a1

=10-15

=-5

a10=a+9d

=15-45

=-30

10th term of this sequence is -30

Answer 2

Step-by-step explanation:

a = 15 , d=10-15=-5 , nth term = 5

a10 =?

we know that

an = a+(n-1)d

a10 = 15 + (10-1) x (-5)

a10 = 15 -50 + 5

a10 = 20-50

a10 = -30