Answer:
B. -40°F
Step-by-step explanation:
its- clearly lower than -30
C1000÷ct=w
you pretty much ×1000 and then ÷t and c
Answer:
and
.
Step-by-step explanation:
The equation can be simplified with the help of trigonometric identities:

Which means that equation is equal to zero if any component of the product is zero. The solutions of the expression are:
a) 

b) 



Any value different of both subsets do not satisfy the equation described above.
Answer:
top right
Step-by-step explanation: