A hotel housekeeper has cleaned of the first floor in cleaning?
of an hour. At what rate is she
Cleaning ?

Plz which expression is equivalent to the expression below?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

Simplify the expression. -2/5(10+15m-20n)