I measured the angle between the minute and the hour hands of an a analog clock ,and in exactly one hour, I measured the angle again and got the same result. Find all possible angles where this could occur.

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.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

Hi, can anyone show me how to do this problem? 100 points for this. in advance