Use the following terms in the same sentence: hypothesis, controlled experiment, and variable

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

In the geometric progression –3, 12, −48… what term is 3,072?