What is 7t 49?

What does a n mean in a formula? How are ratio and probability the same? What is 149597870691 in scientific notation? When does the incirlik bx open? What product is equal to 2 times 3 times 3? How many significant digits are in the number 70.30? Is proof the highest grade of coin? What is an example of an irrational but whole number? Why does the woman in the journal count to twelve over and over as part of her feverish ravings in the Tale of Two Cities? What is 3 and 1 4ths minus 2 and 1 3thirds? What two numbers multiply 144? Which of these is organic form dog sphere triangle? What is 3.1 percent of 28000? What is 23.6 percent as a fraction? What is the pythagorean screw? What is regular heptagon look like? What caused people around the world to coordinate time? What are the upper and lower bounds of 6.52? What is the limit for rounding? What is 6.5 percent of 470?