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The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?

What is the solution for the following system of equations? use any method to solve. y = -x +4 y = x - 2 a. ( 4 , -2) b. (2, 1) c. (3, 1) d.(3, -2)