Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Show that the set has cardinal number ?0 by establishing a one-to-one correspondence between the natural numbers and the given set. Be sure to indicate the general correspondence.
A.
| 1, | 2, | 3, | 4, | 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
, 
, 
, 
, 
, ..., 
, ...B.
| 1, | 2, | 3, | 4, | 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
, 
, 
, 
, 
, ..., 
, ...C.
| 1, | 2, | 3, | 4, | 5, ..., n, ... |
| ? | ? | ? | ? | ? | ? |
, 
, 
, 
, 
, ..., 
, ...D.
| 1, | 2, | 3, | 4, | 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
, 
, 
, 
, 
, ..., 
, ...
Mathematics
Solve the inequality and graph the solution set.
? 12
A. (-?, 16]
B. [-8, 16]
C. (-?, -8] ? [16, ?)
D. (-?, -8]
Mathematics
Solve the problem.The length of the diagonal of a rectangle is given by 
where L and W are the length and width of the rectangle. What is the length of the diagonal, D, of a rectangle that is 52 inches long and 42 inches wide? Round your answer to the nearest tenth of an inch, if necessary.
A. 66.8 in. B. 9.7 in. C. 30.7 in. D. 46.7 in.
Mathematics
Solve.xy - x2 = -20x - 2y = 3
A. (-5, -1) and 
B. (5, 1) and 
C. (-5, -1) and 
D. (5, 1) and 
Mathematics