Question

find the missing terms in the following arithmetic progression._,13,_,3​

Answer 1

Answer:

a+d=13

a+3d=3

from solving you will get

first=18

third=8

Step-by-step explanation:

Answer 2

Answer:

Here your answer

Step-by-step explanation:

AP=x,13,y,3

13=a−d

m=a+d

3=a+3d

a−d=13.....(i) a+3d=3.....(ii)

(i)−(ii)

a−d−a−3d = 13−3

−4d=10

d= -5/2 = −2.5

a= 13+d = 13−2.5= 10.5

l= a−3d = 10.5+3(2.5) = 10.5+7.5 = 18

m = a+d = 10.5−2.5 = 8