Question

For an A.P.if t4=20and t7=32 find a,d,tn​

Answer 1

Answer:

t7-t4 = 3d = 12

d=4

t4 = a + 3d = a+12

a = t4-12=20-12=8

a= 8

d=4

Tn = a + (n-1)d

Step-by-step explanation:

i hope this helps u