Answer:
Step-by-step explanation:
So for question 1, we can see that we have a 30 60 90 triangle with a hypotenuse of 9.
So therefore, y=9/2 and x=4.5sqrt3.
Answer:The answer is -13x
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
<u><em>Combinations</em></u> are a way to calculate the total outcomes of an event where order of the outcomes does not matter.
To calculate combinations, we will use the formula

where
n represents the total number of items
r represents the number of items being chosen at a time.
In this problem

substitute

simplify



