What is AR380-53?

Are parallel and perpendicular lines opposites? Is one-tenths a unit fraction? What year were the scissors invented? What is the difference between differential and differentiation? What is 2quarters 1 dime and 8 pennies? If you had to pick a pair of socks out of a box in the dark that contains 24 white socks and 12 black socks how many socks would you need to pick to get a matching pair? How many syllables does gracious have? How many sqft in 0.093 acre? What is the answer for x2 plus 4x-21? What is the height of a cylinder with the radius of 1.5 and volume is 45? What is a sentence using the words 'negative integer'? Is 3x13 prime? What is 760000000000 divided by 720? What is roman numerals for January 15 1990? Is there a law you have to have a break after 4 hours? How many syllables does constant have? What is twelve billion written In scientific notation? What count can you not get in one hand of cribbage? What is 10 plus 90 plus 60 plus 80? Is a trapazoid a type of polygon?