Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 - 6x - 7 = 0

A. Two different real-number solutions
B. Two different imaginary-number solutions
C. One real solution


Answer: A

Mathematics

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A. 9x2 + 90x + 100 B. 18x2 + 90x + 90 C. 9x2 + 90x + 90 D. 18x2 + 90x + 100

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Find the following.Find -x when x = 2.7.

A. 2 B. 2.7 C. -2.7 D. -2

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Find all real numbers whose distance from 20.8 is 5.

A. -15.8 and 25.8 B. 15.8 C. 15.8 and 25.8 D. -15.8 E. 25.8

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