Mary works for a company that pays time and a half for hours over 40 in a week and double time for holidays this week she worked 8 hours on Monday which is a holiday 10 hours on Tuesday 10 hours Wednesday 9 hours on Thursday and 8 hours on Friday if Mary earns $8 per hour what is the total of Mary's earnings for the week

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.