Question

find the sum of first 10th term of the AP 0.6,1.7,2.8,.....​

Answer 1

Answer:

Step-by-step explanation:

Given AP:  0.6, 1.7, 2.8, ............ 

a = 0.6

d = 1.7 - 0.6 = 1.1

n = 10

Sn = n/2[ 2a + (n-1)d]

     = 10/2 [ 2(0.6) + (10 - 1)×(1.1)]

     = 5[ 1.2 + (9 × 1.1)]

     = 50[ 1.2 + 9.9]

     =5[11.1]

     = 55.5

Hope it helped