Carl is choosing a four-character password for his cell phone. The password can contain letters and digits only, and can't include repeating characters. How many passwords are possible?​

Identify the conclusion of the conditional statement. if you live in phoenix, then you live in arizona.

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.