You need 1/2 liter of milk from the store which of these three sizes do you buy? 100 ml 250ml 500ml and 1500ml

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

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

What is the lcm of 16 and 40 ? 24 and 40 ?