1. you receive two packages of black/white sand mixes. package a is one-third black sand and two-thirds white sand. package b is nine-tenths black sand and one-tenth white sand. how much of each package is needed to create a mixture that is sixty percent black sand and forty percent white sand?

Half of each package. This may not be right, just saying.

Is 8.50 an answer or no? ?

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .