In the diagram, transversal t cuts parallel lines a and b. which equations is necessarily true

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Find the value of x that will make l ll m

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