Factor completely. State that the polynomial is prime if it cannot be factored.28m2 - 51mn + 20n2
A. (4mn + 5)(7mn + 4)
B. (4m - 5n)(7m - 4n)
C. (4mn - 5)(7mn - 4)
D. (4m - 5n)(7m + 4n)
Answer: B
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Solve using the elimination method.x + y = 9x - y = -3
A. No solution B. (2, 7) C. (-3, 7) D. (3, 6)
Match the given function to its graph.1) y = sin(3x)2) y = 3 cos x3) y = 3 sin x4) y = cos(3x)AB
?
CD
?
A. 1A, 2B, 3C, 4D B. 1A, 2C, 3D, 4B C. 1B, 2D, 3C, 4A D. 1A, 2D, 3C, 4B
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - y + 5z = 53x + z = 0 x + 4y + z = -20
A. {(0, -5, 0)} B. Cramer's rule does not apply since D = 0; ? C. {(0, -5, 5)} D. {(0, 0, -5)}
Write the phrase as an algebraic expression. Let x represent the unknown number.Five subtracted from a number
A. 5 - x B. x + 5 C. x - 5 D. 5x