Michael is 5 1/2 feet tall. Michael measures his shadow as 8 feet long. A tree in his backyard has a shadow that is 25 yards long. How tall is the tree?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation