Write an inequality that satisfies the description.Outside the circle with radius 5 and center (0, 0)
A. x2 + y2 > 25
B. x2 + y2 < 5
C. x2 - y2 > 25
D. x2 + y2 < 25
Answer: A
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the x-axis and the curve y = 7sin x, 0 ? x ? ?
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= ?, 
= 
D. 
= 
, 
= 
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Solve the problem.There were 480 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $770. How many adults and how many children attended?
A. 190 adults and 290 children B. 95 adults and 385 children C. 290 adults and 190 children D. 192 adults and 288 children
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Find the magnitude of the vector.
= 
A. 3
B. 
C. 221
D. 
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Rewrite without rational exponents, and simplify, if possible.(x8y8)1/9
A. x72y72
B. 
C. 
D. 
Mathematics