Ashley had 4/ 5 of a spool of yarn. she used 2/5 of it for her project. what fraction of the spool was used for her project? write your answer in simplest form.

I'll give brainliest if you answer right : )

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

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.