A company donates money to a charity every time the baseball team hits a home run. They donate $450 for every home run. Write an equation for the situation, where y is the total amount of money donated and x is the number of home runs hit.

Solve the equation by completing the square. x^2+2x=17

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

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.