Solve the quadratic equation using the most efficient technique (factoring, extracting square roots, completing the square, or the quadratic formula).x2 + x + 9 = 0

A.
B.
C.
D.


Answer: A

Mathematics

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Multiply and simplify.(9 cot ? - 9 csc ?)(9 cot ? + 9 csc ?)

A. 9(cot2? + csc2?) B. 81 C. -81 D. 81(cot2? + csc2?)

Mathematics

Graph the function.f(x) = 2-x

A.

B.

C.

D.

Mathematics

In the following table, Y1 is defined by a rational expression of the form . Use the table to find the values of p and q.

A. p = 0; q = -1 B. p = -1; q = 0 C. p = -1; q = -4 D. p = -4; q = -1

Mathematics

Perform the indicated operation.20.4 L ÷ 2.4

A. 0.085 L B. 85 L C. 0.85 L D. 8.5 L

Mathematics