How many times longer is the whole of geological time than the time represented by recorded?

How do you calculate 10 percent? How many images are formed when two plane mirrors are inclined to each other at an angle of 100 degrees? What are all the prime numbers 1 to100? What is a triangle that has 3 acute angles? You have casio fx-991 EX and you need English manual? Is the number 20550 divisible by 2 3 4 5? How much is 96 times 4? What is non commercial foodservice system? What is the value of the three in 2.300? Which algebraic expression represents this word description: the quotients of four and the sum of a number and three? What is 3.25 percent as a fraction in lowest term? What does a free T4 level of 1.94 mean? What is a horizontal vanishing point? What is 55.8 as a percent? How many years are in half of a century? What figure is made when the points (-12)(22)(2-1) and (-1-1) are connected on a coordinate plane? What is 0.055 as a percent? What do you need to estimate? What are facts about roman numerals? Why do some people put a dash in the number seven?