$2,637 is invested, part at 13% and the rest at 11%. if the interest earned from the amount invested at 13% exceeds the interest earned from the amount invested at 11% by $65.61, how much is invested at each rate? (round to two decimal places if necessary.)

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

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.

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.