Match the polynomial with its binomial factors.x2 - 9x + 20
A. (x - 5)(x - 4)
B. (x + 5)(x + 4)
C. (x - 5)(x + 4)
D. (x - 20)(x - 1)
Answer: A
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Solve the given differential equation. (The form of yp is given.)D2y - 25y = e-5x (Let yp = Axe-5x.)
A. y = c1e-5x + c2e5x - xe5x
B. y = c1e-5x + c2e5x + xe-5x
C. y = c1e-5x + c2e5x - xe-5x
D. y = c1e-5x + c2e5x - xe-5x
Classify the triangle as acute, right, or obtuse and classify it as equilateral, isosceles, or scalene.
A. Obtuse, equilateral B. Right, isosceles C. Acute, scalene D. Obtuse, isosceles
Use a graphing calculator to graph the ellipse.x2 +
y2 =
A. y = ±
B. y = ±
C. y = ±
D. y = ±
Solve the problem.The manufacturer of a CD player has found that the revenue R (in dollars) is when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
A. $841,000 B. $420,500 C. $105,125 D. $210,250