2 points (7) Joanna gets paid $7.70 per hour plus a 15% commission on her sales.
She worked 32 hours last week and had $1,200 in sales. How much did she
make? *

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Could somebody me with this radical simplification?

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?