What equals W?

What times what equals -40 and 84? Is a 2x4 rectangle similar to a 4x8 rectangle? Can 17 go into 3587? What kind of fish food has a FCR less than 1? What is the outlier of 65 72 81 74 28 74? Who invented The first compass and straight edge? What is 6 feet long? What is one divided by three tenths? How do you take out Square Root? What are all the prime factors of 650? Are reflex actions quicker than normal responses? What is limit as x approaches 0 of cos squared x by x? What is carl gauss number theory? How do you write 6.0 as a percentage? What is the gradual rounding of the corners and edges of angular blocks of rocks called? What is the percentage of increase from 8 to 88? What does two glucoses make? If r equals 5z then 15z equals 3 y then r equals? Does a triangle have any lines of symetry? Is 455 divisible by 5?