Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: cylinder x2 + z2 = 64 bounded by y = 0 and y = 4Density: constant
A. 
B. 
C. 
D. 
Answer: C
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A mail carrier must deliver mail to houses in a subdivision shown in the following map. Lines represent streets and letters represent houses. List the houses in the order the mail carrier will deliver mail as she travels each street exactly once and mark the map to show the route. Can she start and stop at the same house? Explain.
Express the number in scientific notation.695,000,000,000,000,000
A. 695 × 10-15 B. 6.95 × 1017 C. 6.95 × 10-17 D. 695 × 1015
Find the present value to the nearest cent.Joshua obtained a loan of $7900 for 360 days at 12%. If the value of money is 4.3%, find the present value in 143 days.
A. $8624.46 B. $8423.10 C. $8347.38 D. $8358.44
Classify the triangle as equilateral, isosceles, or scalene. Then classify it as right, obtuse, or acute.
A. Scalene; obtuse B. Equilateral; acute C. Isosceles; obtuse D. Equilateral; obtuse