John wants to measure the height of a tree. he walks exactly 100 feet from the base of the tree and looks up. the angle from the ground to the top of the tree is 33o . how tall is the tree?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

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.