Answers

2015-09-11T21:58:22+05:30
T12 = a+11d

T12 = -7+11(5)

T12 = -7+55

T12 = 48
0
2015-09-11T21:59:30+05:30
A+(n-1)d=
a=-7
d=5
n=12
-7+(12-1)5
-7+55
=48

0