Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.x2 - 4x + 7 = 0

A. one rational solution
B. two irrational solutions
C. two rational solutions
D. two nonreal complex solutions


Answer: D

Mathematics

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A. 0 B. 12 C. 2 D. 1

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A. 1.2 B. 1.11 C. 1.0 D. 1.1

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Determine if each ordered pair is a solution to the given system of inequalities in two variables.x + y = 13y = x2 - 14x + 49(i) (-4, 17); (ii) (9, 4)

A. (i) Yes; (ii) Yes B. (i) No; (ii) Yes C. (i) Yes; (ii) No D. (i) No; (ii) No

Mathematics

Write the expression in standard form.8i + (-6 - i)

A. 6 - 9i B. 6 - 7i C. -6 + 7i D. -6 + 9i

Mathematics