Ask a New Question
Search
Questions and answers by
Ketshia Ntedika
Answers (1)
a=13, d=-2 Tn+T15-n a+(n-1)d + a+(15-n)d a+dn-d + a+15d-dn 2a + 14d 2(13)+14(-2) 26-28= -2 * -2 < 15
