Did Rene descartes invented the cartisian coordinator?

How many ways can you get to 840 using only multiplication? What do polygons look like? What is the square of 800? What are lines that cross to form a 90 degree angle? Does sum mean subtraction? What is seven eighteenths times 7100? What is 0.70 as a fraction? What is 0.323 as a equivalent fraction? What is the equivalent now for 4 pounds 5 shillings in 1949? What percentage of Americans make 250k? At first it is lifted to one shelf then it is lifted again to a second higher shelf based on the numbers that are obtained from the work calculations what is a correct conclusion? What is the number printed on the bottom of a padlock? How data reconstruction is done by polynomial extrapolation? If you have a test with 30 questions and you have 16 right what is the percentage? What is a co-terminal? Can two right angles be complement to each other? What is 170 divided by 50? What are the different types of primary colours? Can you use a word assorted in a sentence? What sign do you use for 3 is greater than 0?