Answer:
3
Step-by-step explanation:
First, you must change all of this into improper fractions, like shown below.

Now you must change the sign.

Then we must reciprocalize 2/3.

Now we multiply, to get 2 4/10.
Answer:
Using Pythagoras Theorem, squareroot 15^2 - 5^2.
After you found the opposite length, use the cosine rule to find angle x.
Answer:
A
Step-by-step explanation:
We are given the two functions:

And we want to find:

This is equivalent to:

Substitute:

Distribute:

Therefore:

So, our answer is A.