While at a birthday party for your friend, their parent brings out a 3 trays of cupcakes. On the trays, there are 23 chocolate cupcakes and 4 vanilla cupcakes. Find the percent of vanilla cupcakes on the trays using proportions.

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.

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?

How are algebraic expressions evaluated using substitution?