50 inch board is to be cut into three pieces so that the second piece is four times as long as the first piece on the third piece is five times as long as the first piece if x represents the length of the first piece find the links of all three pieces

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.