Answer:
19
Step-by-step explanation:
I just googled it lol
Answer: 
Step-by-step explanation:
Given
The temperature on the ground is 
temperature drop observed is 
The height of the plane is 
The total increase in height per
is
units
Temperature drop is

The temperature at that altitude is

Answer:
The first option
Step-by-step explanation:
Adjacent angles are just two angles next to each other
Answer:
n+4=<13
replace =< with less than or equal to (the < with an extra line under)