Rationalizing the denominator, simply means "getting rid of that pesky root at the bottom", and we do so by simply multiplying it by something to take it out, of course, we multiply the bottom, we have to also multiply the top,

Answer:
6.
Step-by-step explanation:
Answer is 26.31%
The % of red marbles is 26.3157895
ITS C I HAVE NO EXPLANATION BUT ITS C
Answer:
8,13
Step-by-step explanation:
The pattern in +5 so 3+5=8, and 8+5=13