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Did the geography of Greece help or hinder the growth of its city states? Anyone know where I can find chemistry final exam review questions with answers that show how the problems are done? Five times a number subtracted from 40 is the same as three times the number find the number can you please show work thank you? Which method is more accurate to determine the magnification of an image di/do or hi/ho? If a series a(n) converges (0 to inf), then does sin(a(n)) converge?