7.
two urns each contain green balls and black balls. um i contains four green balls and six black balls and um ii
contains five green balls and three black balls. a ball is drawn from each urn at random. what is the probability
that both balls are black?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

Do, h = (7, 9) (14, 18) the scale factor is

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height