Who is the diophantus of the opera?

Are most of these bodies smaller than pebbles than boulders? What is an expression containing at least one variable called? What is a experimental investigation? What is the whole word for o'clock? What is the percentage between 1480.00 and 1380.00? How do you create a straight line that slopes up on a position-time graph? What is an obtuse line? What are Social expression products? How does the set theory help us today? How many 12x12 inch tiles will it take to cover 69 square feet? What is 5x squared times 25? What is the inverse of 15-8times x divided by 3? What army value permits you to face fear danger or adversity? How many times a hour should you recirculate air in an hour? What is 825 in percentage form? What is the defintion for perimeter? What is the standard form for 2.3 times 10 to the 6th power? What number can be divided by 7 without a remainder but when divided by 2 3 4 5 or 6 leaves 1? How many feet in 131 inches? 7.438788 rounded to one decimal point?