Negative 55 plus neagtive 7 times 6 subtract negative 3 times 4

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).