a set of pencils sells for 2.15 and costs 0.45 to make. Thirty percent of the profit from each set goes to the school. if 600 sets are sold how many will go to the school

Ihave this math question 2/3 ÷2 1/10=

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field