Answer
It is not possible to achieve a temperature of -465 $^{\circ}$F, since this is lower than the absolute zero of temperature.
Work Step by Step
T($^{\circ}$C) = $\frac{5}{9}$ * [T($^{\circ}$F) - 32]
T($^{\circ}$C) at -465 $^{\circ}$F:
T($^{\circ}$C) = $\frac{5}{9}$ * [-465 - 32]
T($^{\circ}$C) = $\frac{5}{9}$ * [-497]
T($^{\circ}$C) = -276.1111111 $^{\circ}$C
Rounding to 3 significant figures gives -276 $^{\circ}$C
-276 $^{\circ}$C is lower than the absolute zero of temperature -273.15 $^{\circ}$C and therefore it is not possible to achieve a temperature of -465 $^{\circ}$F.
