Answer:

Step-by-step explanation:
Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.
B =
= 
Answer:

Step-by-step explanation:
Definition of negative exponent:

In our case, a = 3 and -n = -2.

Now we just evaluate the power in the denominator.

Answer:
A. x = 5
Step-by-step explanation:
3x + 9 = 24
→ Minus 9 from both sides
3x = 15
→ Divide both sides by 3
x = 5
Answer:
The Answer is A. I made a graph and those points are the only ones that made a line.
Answer:
-2
Step-by-step explanation: