What is this answer

-9X(-3) =

Is the orthocenter of a triangle on the inside ?

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

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