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

Mathematics

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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

Mathematics

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

Mathematics

Use a graphing calculator to graph the ellipse.x2 + y2 = 

A. y = ±

B. y = ±

C. y = ±

D. y = ±

Mathematics

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

Mathematics