The value of the 8th term is 78 the sequence is increasing by 10 each time. find the 20th term

Question

asked Mar 2, 2017 223k views

1 Answer

Martinaut · Answer 1 · 2017-03-09T06:12:29+0000

an = a + (n - 1)d
a8 = a + (8 - 1) x 10 = a + 7 x 10 = a + 70
a + 70 = 78
a = 78 - 70 = 8

20th term (a20) = 8 + (20 - 1) x 10 = 8 + 19 x 10 = 8 + 190 = 198

The value of the 8th term is 78 the sequence is increasing by 10 each time. find the 20th term

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

No related questions found

Categories

Other Questions