Need with algebra homework! to a box that contained 50 pencils 10 out of which were red several more red pencils were added. now 50% of all pencils in this box are red. how many red pencils were added to the box?

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =