Find all numbers that must be excluded from the domain of the rational expression.
A. x ? 
B. x ? 4
C. x ? 16
D. x ? 4, x ? -4
Answer: D
Mathematics
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over the region 1 ? x2 + y2 ? 36.
A. 2?(ln 6)2 B. ? ln 6 C. 2? ln 6 D. ?(ln 6)2
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Use Euler's formula to answer the question.A pyramid has 4 faces. How many edges does it have?
A. 2 B. 4 C. 6 D. 3
Mathematics
Verify the identity.
= 
What will be an ideal response?
Mathematics
Determine the domain and range. Then state whether the relation is a function.
A. Domain: {x|x ? 9} Range: {y|y ? 6} Function B. Domain: all real numbers Range: {y|y ? 0} Not a function C. Domain: {x|x ? 0} Range: all real numbers Not a function D. Domain: all real numbers Range: all real numbers Function
Mathematics