What is the multiple of 3 and X BETWEEN 10 and 20?

What do you call it when you trade something you have for something else of equal value? 1 property about the diagonals of a rhombus have? Which idea can be stated as fluid in a pipe moves faster as the area of its cross section get smaller? Between 1971 and 1994 did the number of children ages 6 to 18 with untreated cavities rise or fall? How much are quarters in money? What does 0 equals 0 mean? What level of intensity is bicycling 5 - 9 miles per hour on level Terrain? What number divides 140? What are the 3 factors that decrease crop productivity? Which is a part of interphrase? How many minutes is 125 miles? What two things do historians rely on to measure time? Who is the smartes person in the world? Why is the number 1 trillion have 18 zeros in Great Britain and only 12 in the us? What is the wet foot dry foot law? Are all eight sided shapes called octagons? What is the place value of 3 in 26.3? What is 7 out of 12 as a percent? T varies directly as r and inversely as s t equals 2 when are equals 26 and s equals 78? What is four consective odd numbers whose sum is 265?