What is the value of t ?
(1) The average (arithmetic mean) of
t2 and 8t is -8.
2) sqroot t^4=16
OA is A
(1) The average (arithmetic mean) of
t2 and 8t is -8.
2) sqroot t^4=16
OA is A
1.grandh01 wrote:What is the value of t ?
(1) The average (arithmetic mean) of
t2 and 8t is -8.
2) sqroot t^4=16
OA is A
(t2 + 8t)/2 = -8
t2 + 8t = -16
t(2+8)= -16
t = -16/10
sufficient
2.
sqroot t^4=16
t^4 = 16 * 16
t can be -4 or 4
insufficient
ans[spoiler]= a[/spoiler]
