Which expression is equivalent to
1-cos(10x)?

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.

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay

If a=0.333333 and b=0.55555, what is the value of a+b