Ann is grouping 38 rocks. she can put them into groups of 10 rocks or as single rocks. what are the different ways ann can group the rocks?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8