Suppose the scores X on a test are normally distributed with a mean of 40 and a standard deviation of 10. If P(A < X . Use a TI-83, TI-83 plus, or TI-84 calculator, and round your answers to the nearest integers.

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.

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y

What is the equation, in point-slope form, of the line that has a slope of 6 and passes through the point (–1, –8)? a. y+8 = 6 (x+1 )