Multiply.(11y + x)(11y - x)
A. 121y2 + 22xy - x2
B. 121y2 - 22xy - x2
C. 121y2 - x2
D. 22y2 - x2
Answer: C
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Find the center of mass of a thin plate of constant density covering the given region.The region enclosed by the parabolas y = - x2 + 18 and y = x2
A. 
= 0, 
= 
B. 
= 0, 
= 9
C. 
= 9, 
= 0
D. 
= 0, 
= 18
Provide an appropriate response.Find the discriminant of the equation: 3x2 - 2x + 5 = 0
A. The discriminant value is -56. B. The discriminant value is 0. C. The discriminant value is 64. D. The discriminant value is 56.
Provide an appropriate response.The person to whom the proceeds of an insurance policy are payable is referred to as the policyholder.
A. True B. False
Solve the problem.Sven can type 59 words per minute. How many words would he type in 
hour (15 minutes)?
A. 236 words B. 221 words C. 15 words D. 885 words