Answer:
89°C
Step-by-step explanation:
I think it is just a case of subtraction. Remove the °C and just treat it as 85 - -4
Answer:
.180
Step-by-step explanation:
use a calculater
Answer:
Step-by-step explanation:

Answer: d=42
Step-by-step explanation:
Both angles are in a supplementary (straight with 180 degrees) line bisected by an angle, so use the supplementary angle theory
(d+7)+(3d+5)=180
4d+12=180
4d=168
d=42