For nonzero values of x and y, which of the following expressions is equivalent to -18x^3y^2/3xy?

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?