If f(x)= sin(x) and g(x)= sin(2x), which of the following statements is true?

If ac = 12 and ab=7 is it possible that bc =10

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.