How did Rene descartes discover the coordinate plene?

What does XI represent in Roman numerals? What is the width of a rectangular prism if the volume is 48 cubic meters and its length is twice its width and the height is 4 meters longer than its width? What number is 800.00 30 percent of? How many ml to kl? What are two synonyms for maintain? Which of the pairs of numbers whose sum is 70 has the largest product? What is 11 into 616? What is the number twenty-three thousand and ten in figues? What is 99 in French? More than three quarters of what country is open field? Find the slope of a line at -3 0 and 4 3? How do you write .00263 in scientific notation? Write 0.235 as a reduced fraction? What is XCI in roman numeral? What is the sale price 14.40 20 percent off? What is 40 percent off of 33.00? Is 12345 a prime number? How to write 100 thousands? What type of decontamination is carried out by a unit to reduce contamination equal to natural background or to the lowest level possible.? 10 by 10 by 8 ft tall Find the surface area in square feet?