Answer:
Step-by-step explanation:
um
It is 30-60-90 triangle, so:

Answer B.
Answer:
The difference is 
Step-by-step explanation:
We must find the common denominator of the fractions.
The common denominator of
and
is
; therefore we have


now it is easy to subtract
using the number line: we have to move
units to the left in order to get to
.
Thus our answer is

Answer: 3/5
Step-by-step explanation: thats your answer.
I Believe the mean would would 60 degrees Fahrenheit