There are 270 students in yr7, each student studies one of french or German or Spanish.

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?