Perform the indicated operations and simplify the result. Leave the answer in factored form.
- 
A. 8x
B. 
C. 
D. 0
Answer: A
Mathematics
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Evaluate the expression.
+ 
? 
A. 
B. 
C. 
D. 
Mathematics
Decide whether the situation involves permutations or combinations.An arrangement of 4 people for a picture.
A. Permutation B. Combination
Mathematics
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 58p
B. 
C. 
D. 9
Mathematics
The two radii of the frustum of a right circular cone are increasing at a rate of 7 centimeters per minute, and the height is increasing at a rate of 16 centimeters per minute (see the figure below). Find the rate at which the volume is changing when the two radii are 18 centimeters and 27 centimeters, and the height is 13 centimeters.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics