135 degrees is your answer
Answer:

Step-by-step explanation:
So, for 60 square feet they charge = 287
So, for 1 square foot they charge = 
If they charge the installation fee this becomes = 
We can write an equation to calculate cost by using this 
Where x is the amount of square foot
Answer:
5/13
Step-by-step explanation:
sin R = opp side/ hypotenuse
sin R = 5/13
Answer:
1) 9:14
2)4:1
Step-by-step explanation:
You have to have all of the teachers compared to all of the adults (teachers included)
You have to simplify 12:3 and you get 4:1.
245 divided by 49 = 5 therefore there are 5 seats in each row.