Assume that Earth is a sphere with a radius of 4500 miles. The center of Earth is placed at the origin of a three-dimensional coordinate system. What is the equation of the sphere?
?
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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0.74L = ? mL
A. 7400mL B. 740.0mL C. 740mL D. 0.0074mL
Mathematics
Find the volume of the described solid.The solid lies between planes perpendicular to the x-axis at x = -
and x = 
. The cross sections are squares whose diagonals stretch from the x-axis to the curve 
A. 
?
B. 24?
C. 
?
D. 
?
Mathematics
Perform the indicated operation.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Find the indicated derivative.Find fy for f(x, y, z) = 
.
A. - 
B. - 
C. - 
D. - 
Mathematics