Factor the polynomial completely.x2 - 11x + 28
A. (x + 4)(x + 1)
B. prime polynomial
C. (x + 4)(x - 7)
D. (x - 4)(x - 7)
Answer: D
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Find the center, foci, and vertices of the ellipse.25x2 + 49y2 = 1225
A. center at (0, 0)
foci at (-7, 0) and (7, 0)
vertices at (-49, 0), (49, 0)
B. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -7), (0, 7)
C. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-7, 0), (7, 0)
D. center at (0, 0)
foci at (0, -5) and (0, 5)
vertices at (0, -25), (0, 25)
Use the fundamental counting principle to count the number of outcomes. How many ways can a president, vice-president, secretary, and treasurer be chosen from a club with 8 members? Assume that no member can hold more than one office.
A. 32 B. 70 C. 1680 D. 24
Solve.
= 9
A. x = -81 B. x = 18 C. x = 81 D. x = 9
Find sec ? and csc ?.
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