Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: portion of the sphere x2 + y2 + z2 = 16 that lies in the first octantDensity: constant
A. 
B. 
C. 
D. 
Answer: A
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Find the interest and maturity value for the loan. Round to the nearest cent.$19,480 at 10% for 2.7 years
A. $5,259.60; $24,739.60 B. $2,768.21; $22,248.21 C. $7,207.60; $26,687.60 D. $5,064.80; $24,544.80
Solve the problem.Evaluate arccos 
degrees.
A. 135° B. 45° C. 120° D. 60°
Solve the problem.To get credit for graduation, Brittany completed 40 hours of community service. She worked at a soup kitchen for 
of the time. She picked up litter along highways for 
of the time. The rest of the hours she spent tutoring younger children after school. How much time did Brittany spend tutoring?
A. 21
hours
B. 19
hours
C. 19
hours
D. 20
hours
Provide an appropriate response.The table shows the number of pupils per teacher in selected counties in a certain state. 
Which counties have a figure greater than 12.5?
A. Addison, Branson, Cumberland, Kendall, Putnum B. Dixson, Hendricks C. Addison, Branson, Cumberland, Dixson, Kendall, Putnum D. Hendricks