Solve the equation.2k2 - 17k - 9 = 0

A. {-2, 9}
B.
C.
D.


Answer: C

Mathematics

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Solve the problem.A drink and a sandwich together cost $4.75. The sandwich costs $1.25 more than the drink. How much does the sandwich cost?

A. $0.50 B. $1.75 C. $3.00 D. $4.25

Mathematics

Simplify the expression. + 

A.
B. 4 sin x + 4 cos x + 6
C.
D. -4 sin x - 4 cos x - 6

Mathematics

Rationalize the denominator. Assume all variables represent positive real numbers.

A.
B.
C.
D.   - 1

Mathematics

Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 3x6 - 7x4 - 7x3 + 4x2 - 5x

A.
B.
C.
D.

Mathematics