Answer:
87
Step-by-step explanation:
tn= a + (n-1)d
t12 = 10 + (12-1)7
=87
Answer:
XXX
Step-by-step explanation:
The equation has no real solutions. (The graph has no x-intercepts.)
_____
The complex solutions are x = 0.4 ±i√0.44.
Answer:n=-3.1
Step-by-step explanation:
2n + 3 = -3.2
Subtract 3 on both sides
2n+3-3=-3.2-3
2n=-6.2
Divide 2 on both sides
2n/2=-6.2/2
n=-3.1