Solve the problem.The sum of three numbers is 6. The first, minus the second, plus 3 times the third, is -6. The third, plus 4 times the first, plus the second, is 12. What are the numbers?
A. 2, 5, -1
B. -2, -5, 1
C. No solution
D. 2, 2, 5
Answer: A
Mathematics
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Solve the problem.Find the center of mass of the first-octant portion of homogeneous solid sphere of radius 2 centered at the origin.
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Mathematics
Write a description of the shaded region using the symbols A, B, C, ?, ?, -, and ' as needed.
A. B - A' B. A - B C. B ? A' D. A ? B'
Mathematics
What fraction is represented by the shaded portion of the figure?
Unit = one circle
A. 
B. 
C. 
D. 
Mathematics
Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.a2x + b2y = a2ax + by = b
A. 
B. 
C. 
D. 
Mathematics