Use the rational zero theorem, Descartes's rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the equation.x3 - 75x - 250 = 0
A. -5, 5, 10
B. -10, -5, 5
C. -5, -5, -10
D. -5, multiplicity 2; 10
Answer: D
Mathematics
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Solve. Remember to insert units when writing your answer.In November, 9 tons 1,284 lb of coal were delivered to a steel mill. In December, 3 tons 1,779 lb were delivered. Find the total amount of coal delivered in these two months.
A. 6 tons 1,505 lb B. 13 tons 1,063 lb C. 12 tons 1,063 lb D. 5 tons 1,505 lb
Mathematics
Give the coordinates of the points shown on the graph.
A. R = (-6, -6), S = (5, -6) B. R = (5, 4), S = (-6, -3) C. R = (-6, 5), S = (-3, -6) D. R = (-6, 5), S = (-6, -3)
Mathematics
Simplify the fraction.
A. 3k B. 3k2 C. 8 D. 8k2
Mathematics
Factor the special products.z2 - 9
A. (z + 3)(z - 3) B. (z - 3)2 C. (z + 3)2 D. prime
Mathematics