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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.

What multiplys to be 1 but adds up to be 4

Find the slope of the line that passes through the points (-2, 4) and (-5, -6). -2/7 10/3 -2/3