Each marble bag sold by maya's marble company contains 5 yellow marbles for every 3 red marbles. if a bag has 40 yellow marbles, how many red marbles does it contain

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

How are sas and sss used to show that two triangles are congruent?

Which of the following parabolas opens down?