Factor the polynomial expression 8x^3-1

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

I’m confused on how to work the pie charts

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?