Question

for an A. P. if t4=12 and d=10, then find its general form

Answer 1

Hey...
t4 = 12
a + 3d = 12
a + 3(10) = 12
a = 12- 30
a = -18
Hope this would help you.
Mark it as brainliest if you like.
@ Saadya

Answer 2

hey,

T4=12
d=10
Tn=a+(n-1)d
T4= a+(4-1)10
12=a+(3)10
12=a+30
a= 30-12
a= -18


I hope that was useful