My coin collection had 27 coins. they are only quarters and half-dollars. if its worth $10.50. how many are there of each coin? show work

Which value is not a solution of 8x^3 – 1 = 0

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

Find the volume of the wedge cut from the first octant by the cylinder z=12-3y^2 and the plane x+y=2.