Answer:

Step-by-step explanation:
Problems like this require that you recognize that the denominator of the right term is a factor of the denominator of the left term. That is, you're supposed to know how to recognize and factor the difference of two squares.

Answer:
the answer is 22.36 or 22.4
Step-by-step explanation:
3w-13w=-20
Combine like terms
-10w=-20
divide both sides by -10
w=2
Step-by-step explanation:
it's easy to prove in any right triangle with a 30° angle, the side opposite to that angle is half the hypotenuse. CA (1/2)BC, CA/BC=1/2
Answer:
a. 0.25
Step-by-step explanation:
The given expression is

Factor the denominator using difference of two squares.

Cancel out common factors;

We plug in 2 to get

