Adesign is formed by joining isosceles right triangles and 60°-30° right triangles as shown in the diagram. if the hypotenuse of the 60°-30° triangle is 12 centimeters, which is closest to the length of one leg of the isosceles right triangle?

How many zeros does the function f(x)=4x3-x2+1 have

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.