If the teachers weights Homework at 20%, Quizzes at 20%, Tests at 40\% , and the Final Exam at 20\% , what is the minimum grade Heather can make on the final exam so that she scores a 90 in the class ? 86 90 98

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

If the value of cos330°is√3/2 then find cos 165°.

The median for the given set of six ordered data values is 29.5 9 12 25 __ 41 48 what is the missing value?