Which statement below best applies to the following expression?
-4√11 - 5√13
a.
the two terms cann√ot be combined because the radicands are not identical, and cannot be simplified so that they are identical
b.
the two terms cannot be combined because the indices are not identical
c.
the two terms cannot be combined because the resulting value of the subtraction would be negative
d.
the two terms may be combined

70 points ! pls 2. given the following two sets of data what is the union of the two sets and what is the intersection of the two sets. set a = {1, 2, 3, 4, 5, 6, 7, 8, 9} set b = {2, 4, 6, 8, 10, 12, 14} 3. given a regular deck of cards. describe a way of pulling cards that would create a dependent event and then one that would create an independent event. 4. what is the probability of drawing a red card and then drawing a spade without replacing the card that was drawn first?