Answer:
-cos(2x)
Step-by-step explanation:
I did trig last year and tutor a trig class this year :)
C because I just did that
Let the cost of renting a chair be x and for renting a table be y than 5x + 3y = 31 and 2x + 6y = 52 2x+ 6y = 52 can be further simplified to x + 3y = 26 now try solving for x and y... best of luck:D
Answer:
X = 9 or x = -9
Step-by-step explanation:
We want to solve the quadratic equation

We shall use the square root method
Let us add 4 to both sides to get:


We take square to get:


The solution is x=9 or -9
359ft
Step-by-step explanation: