Determine whether the statement is true or false.In the simplex method for a canonical linear programming problem, if a solution is not optimal then the variable which should be brought into the solution is the variable xk for which the entry in the bottom row is as negative as possible.

A. True
B. False


Answer: A

Mathematics

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Find the product.(2x + 4)(x + 7)

A. x2 + 28x + 18 B. x2 + 18x + 17 C. 2x2 + 17x + 28 D. 2x2 + 18x + 28

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Solve the system. x - y + 5z = 272x + z = 5 x + 4y + z = -3

A. {(0, -2, 5)} B. {(5, -2, 0)} C. ? D. {(5, 0, -2)}

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Identify the like terms in the algebraic expression.25x - 8y - 11x - 3y

A. 25x and -11x; -8y and -3y B. 25 and -11 C. 25x and 11x; 8y and 3y D. 25 and 11

Mathematics

Solve the problem.For a dial-up service between two cities, a telephone company charges 105 cents for the first minute and  for each additional minute (or fraction thereof). Write an equation such that y, the total cost of the call in cents, is expressed in terms of x, the length of the call in minutes for 1 ? x ? 8.

Fill in the blank(s) with the appropriate word(s).

Mathematics