Show that the set is infinite by placing it into a one-to-one correspondence with a proper subset of itself.
?
What will be an ideal response?
We can show that the set 
can be placed into a one-to-one correspondence with a proper subset of itself 
:
can be placed into a one-to-one correspondence with a proper subset of itself :?
?
Since 
is a proper subset of A, we see that the set 
is infinite.
Mathematics
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Multiply.
A. 25,345,160 B. 25,346,160 C. 25,356,160 D. 25,346,260
Mathematics
Add or subtract. Simplify by collecting like radical terms, if possible.-14
+ 5
A. -19
B. 8
C. 20
D. -9
Mathematics
Solve.The temperature at 2 p.m. on January 16 was -12°F. By 11 p.m. the temperature had risen 20 degrees. Find the temperature at 11 p.m.
A. -32°F B. 8°F C. 32°F D. -8°F
Mathematics
Use synthetic division to find the quotient and the remainder.
A. quotient: x2 + x + 1; remainder: -4 B. quotient: x3 - x2 - x - 1; remainder: 0 C. quotient: x2 - x - 1; remainder: 0 D. quotient: x2 + x + 1; remainder: 5
Mathematics