Solve.x2 + y2 = 101xy = 10
A. (1, 1), (1, 10), (-1, -1), (-1, -10)
B. (20, 1), (1, 10), (-20, -1), (-1, -10)
C. (10, 1), (1, 10), (-10, -1), (-1, -10)
D. (10, 1), (2, 10), (-10, -1), (-2, -10)
Answer: C
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Identify the form of the argument and state whether the argument is valid or invalid.If it is cold, then you need a coat.You do not need a coat. Therefore, it is not cold.
A. Fallacy of the inverse; invalid B. Law of syllogism; valid C. Law of contraposition; valid D. Fallacy of the converse; invalid
Graph the equation. Include the coordinates of any local extreme points and inflection points.y = x + cos 2x, 0 ? x ? ?
A. local minimum: 
local maximum: 
inflection points: 
, 
B. local minimum: (1.444, -0.246)
local maximum: (0.126, 1.031)
inflection points: (0.785, 0.393), (2.356, 1.178)
C. local minimum: 
local maximum: 
inflection point: 
D. no local extrema
inflection point: 
Factor the polynomial completely. If a polynomial cannot be factored, state that it is irreducible.x3 + 4x2y + 4xy2
A. x(x - 2y)2 B. irreducible C. xy(x + 2)2 D. x(x + 2y)2
Evaluate the integral.
The choices are rounded to the nearest hundredth.