500000000 is what percentage of 4 trillion?

Is Efficiency a measure of what is produced divided by what is consumed? What is February 11th 2009 in roman numerals? Ten percent of sixty five thousand? Total of 1175 diagonal can be drawn in a polygon? What is 2.15 rounded to one decimal place? What is the interquatile range of 7 29 14 3 34613? How long would it take to travel 14.4 miles going 35 MPH? Are 2 points always collinear? How many syllables in word weave? What is 1 fifth plus 3 fourths? What is 3 and a half as an improper fraction? What percent is 7 million of 2.5 billion? Can lengths 6 6 2 make a triangle? How many syllables does the word demonstration have? What is the difference between plenty and copious? Why is the product of two decimals each less than one be less than one? What to numbers can be multiplied to get the answer 441? What is the side of square if the area is 100 m2? Is a description of something that includes a number and a unit? What is the prime factorization and gcf of 16 and 20?