A rectangular photograph is mounted inside a rectangular poster. The area of the photograph is 600 in. There are 3-in. borders between the
top of the photograph and the top of the poster and between the bottom
of the photograph and the bottom of the poster. There are 2-in. borders between the sides of the photograph and the sides of the poster. If the
perimeter of the poster is 120 in., what are the dimensions of the photograph?

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

If chord ab is congruent to chord cd, then what must be true about ef and eg?