Evaluate the expression.

A. 42
B. 1260
C. 21
D.

Answer: C

Mathematics

Find the value of k so that the equation will have exactly one rational solution.49x2 - 14x + k = 0

A. None B. 1 C. -1 D. 0

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Mathematics

Solve the linear system using an inverse matrix. x + 2y + 3z = -1 x + y + z = -3-x + y + 2z = 11

A. (7, 4, 0) B. (-9, 10, -4) C. (30, -47, -16) D. (-1, -12, -22)

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Mathematics

Simplify. Assume that variables can represent any real number.

A. 3z³
B. 3z²
C. 9z³
D. 9z²

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Mathematics

Approximate the value using a calculator. Express answer rounded to three decimal places.e2.37

A. 15.154 B. 10.439 C. 10.697 D. 6.442

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Mathematics