Answer:

Step-by-step explanation:
using the cosine ratio;

From the question, the side of the right angle triangle that is adjacent to the measured <a,(i.e BAC) is AC=24 and the hypotenuse is AB=25
This implies that,

I'm assuming all of (x^2+9) is in the denominator. If that assumption is correct, then,
One possible answer is 
Another possible answer is 
There are many ways to do this. The idea is that when we have f( g(x) ), we basically replace every x in f(x) with g(x)
So in the first example above, we would have

In that third step, g(x) was replaced with x^2+9 since g(x) = x^2+9.
Similar steps will happen with the second example as well (when g(x) = x^2)
Answer:
Step-by-step explanation:
domain is all ur x values.....
domain = { -4,0,2,3}....u only have to write them once if they repeat
range is all ur y values....
range = { 0,1,4,5}
Answer:
B=3.6h
Step-by-step explanation:
I had the same question on my hw and I guessed that and got it right so