Why was mathematics important to the thinking of Descartes?

How do you use multiplying positive and negative integers? How do you find the equillibrium price and quantity using graphical and algebraic methods? What is 483 in Roman Numerals? What is the measure of one rotation? Does an isosceles triangle have two sides that are the same length? What is the area of Cervignano d'Adda? What item is as long as a millimeter? 34 is 40 of what number? Did anyone were arrest for the stolen fifty dollars bill Trinidad 1977? What did kelly miller do? What is the scientific notation of 0.0000019? How can you use probability to predict traits? What is the awnserw to 15.4-3.75? What is nine and four over ten in decimal form? How do you write eight and three hundred four millionths? What are prime numbers between seventy and ninety? Which groups are smaller than a kingdom? Can a parallelogram be made by joining two triangles? A Gaussian surface does not enclose a charge Does it mean that E equals 0 on its surface? How many months is 109 days?