Answer:
45
Step-by-step explanation:
2x+2x+2x+3x+3x=540(sum of angels in a five sided polygon)
12x=540
x=45
10x-20=10x-20, make your decision on the answer from this which they are all real numbers. Hope this will help you!
Answer:
All are discrete sets
Step-by-step explanation:
Any set for which you can list the elements is a discrete set, even if that list has "..." (continues in like fashion). Sets that are not discrete are those that are continuous, such as "all real numbers" or "the numbers between 0 and 1".