You paint four walls. Each wall is a rectangle with a length of 22 feet and height of 12 feet. one gallon of paint covers 330 square feet. how much paint do you need in order to cover the walls

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

mark has $52

hope this !