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Write the sum using summation notation, assuming the suggested pattern continues. 9 - 18 + 36 - 72 +? Generate 500 random numbers on the interval 1 to 65536. find fraction of #'s greater than or equal to 512 and less than or equal to 2048.? Rationalize the denominator. Assume that all variables represent positive real numbers. 4xy^2/index 5 radical 4x^4y? How is friction involved in the decreasing of mechanical energy? Do astronauts in space still drink Tang for their nutrition needs like they did in the 70s?