Associative binary operation
Let G be a set and let * be an associative binary operation on G. Assume that there exists a left identity element in G and that every element in G has a left inverse. Prove that (G, *) is a group.
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Which of the following is true for a symmetrical distribution?
On January 1, 2011, Dean Corporation signed a ten-year noncancelable lease for certain machinery. The terms of the lease called for Dean to make annual payments of $100,000.
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An aluminum cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. A 420 g sample of silver at an initial temperature of 88°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final eq
The air surrounding the piston-cylinder is at 14.7 psi. What is the gage pressure of the air in the cylinder? What is the absolute pressure of the air in the cylinder?
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If using the straight line method, the amount of depreciation expense during the first year is higher than that of the double-declining-balance.
When a driver brakes an automobile, the friction between the brake drums and the brake shoes converts the car's kinetic energy to thermal energy. If a 1400 kg automobile traveling at 35 m/s comes to a halt, how much does the temperature rise in ea
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