Answer:
50%
Step-by-step explanation:
Since there is either heads or tails, meaning only two options you have a 50% chance of getting heads
No, it isn't a right triangle.
I think it f(x) = 3x + 4 if I am wrong I am so so sorry have a great day.
Answer:

Step-by-step explanation:
When simplifying an exponent a way to do is to expand the exponent. This means that it will now be

Whenever you see an x or y on the numerator and denominator cross it out because it is the same thing as 1
When you cross out all of the x's and y's the only variable left is y in the denominator. This means that the answer is 
125 divided by 5 is 25. hope this helped but im not to sure what friendly parts are sorry