Factor the polynomial.x2 - x - 20
A. (x + 5)(x - 4)
B. (x + 1)(x - 20)
C. (x + 4)(x - 5)
D. prime
Answer: C
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Graph the union or intersection of the two sets, as requested.Union
A. 
B. 
C. 
Round the number to its given place value.A clothing store has a shirt on sale for $23.35. Round this value to the nearest dollar.
A. $23.35 B. $23.0 C. $24 D. $23
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 3, y = 2, z = 5, w = 5; (3, 2, 5, 5) B. x = -6, y = 29, z = -36, w = -24; (-6, 29, -36, -24) C. x = 2, y = 4, z = 1, w = 7; (2, 4, 1, 7) D. x = 3 + w, y = 2 - 2w, z = 5 + 2w, where w is any real number
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z + w =7 3x - 2z + 5w=11-4x + 3y + w=4-x - y - z - w=6
A. ?
B. {(
, - 
, 5, - 
)}
C. {(
, 1, 
, -2)}
D. {(-11, 
, 
, -4)}