Solve the problem.Find the center of mass of the upper half of a solid ball of radius 4 centered at the origin if the density at any point is proportional to the distance from that point to the 
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Answer: D
Mathematics
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Write an equivalent sentence for the statement.If you are mistaken then you are wrong, and if you are wrong then you are mistaken. (Hint: Use the fact that 
is equivalent to 
A. You are mistaken or you are wrong. B. You are mistaken if you are wrong. C. You are mistaken if and only if you are wrong. D. You are mistaken and wrong.
Mathematics
Graph the hyperbola. Give the coordinates of the center as well as the values of a and b.
- 
= 1
A. center (0, 0), a = 8, b = 3
B. center (0, 0), a = 3, b = 8
C. center (0, 0), a = 8, b = 3
D. center (0, 0), a = 3, b = 8
Mathematics
Express the vector as a product of its length and direction.
i - 
j - 
k
A. 
B. 
C. 
(i - j - k)
D. 
Mathematics
What will be an ideal response?
Mathematics