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Simplify the expression as much as possible.
1/sin(t)cos(t)−1/tan(t)=? Suppose a test has a mean of 74 and a standard deviation of 4. 95 percent of all scores would fall between what two values? Y=11-4x/9 y=? Help with analyzing functions defined by definite integrals? The current through a 675 Ω resistor is 185 mA. To the nearest volt, what is the potential difference across the resistor?