Find the indicated sum for the geometric series:

∑4k=13k−1

What are the domain and range of the function? f(x) = -4 (sqrt)x

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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