A stallholder at the weekend market buys 10kg of broken chocolate pieces for $45. She puts them into smaller plastic bags of 250g and sells them for $1.50. Find the percentage profit.

What are the sotions to the quadratic equation 9x^2=4

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅