The argument has a true conclusion. Identify the argument as valid or invalid.All dogs have fur.
A cat is not a dog.
A. Invalid
B. Valid
Answer: A
Mathematics
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Graph the rational function. Include the graphs and equations of the asymptotes.f(x) = 
A. asymptote: y = 0
B. asymptotes: x = 2, x = -2
C. asymptote: y = 0
D. asymptote: y = 1
Mathematics
Find the angle between u and v in radians.u = -7i + 7j - 4k, v = 8i + 4j - 4k
A. -0.11 B. 1.57 C. 1.69 D. 1.63
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region between the curve y = 
and the x-axis from x = 1 to x = 9, with density ?(x) = 
A. 
= 5, 
= 
B. 
= 5, 
= 
C. 
= 6, 
= 
D. 
= 5, 
= 
Mathematics
Use the given information to find the exact value of the trigonometric function.cos ? = - 
, sin ? > 0
Find cos 
.
A. - 
B. - 
C. 
D. 
Mathematics