Question

True or false
point P is the mind point of CD if cp=/2-5 then l ( CD) =2.5​

Answer 1

Answer:

Step-by-stTherefore, the given series doesn’t form a A.P. (xv) 1 2, 5 2, ... Let 84 be the n th term of this A.P., then as per the n th term formula, a n = a(n-1)d. 84 = 7+(n – 1)×7/2. 77 = (n-1)×7/2. 22 = n−1. n = 23. We know that, sum of n term is; S n = n/2 (a + l) , l = 84 S n = 23/2 (7+84) ... This is one of the important chapters from the point of the Class 10 examination. An arithmetic progression is a very basic and importantep explanation: