What two numbers give you -60 when you multiply and -11 when you add

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?