1 This generally includes replacing a few parts like hoses, sensors, or either the compressor or condenser. 2  CostHelper readers report paying $171-$727 for minor air conditioning repairs, at an average cost of $488. 3  Extensive auto air conditioning repairs can cost $1,000-$4,000 or more, depending on make and model.
Their numerical system is similar to that of the Romans, but instead of Xâs and Iâs they use dots, bars and shells. Each dot has the value of one, each bar the value of five, and each shell the value of zero. This brings us to the main mathematical contribution of the Mayans, the concept of zero.
Well technically no one has ever invented math but I know that the Greeks had started a way of counting numbers. There was no single person who invented mathematics. Mathematics was used, and technically invented, by many cultures around the world. These cultures used their own form of mathematics, which could be considered 'math' in their time and how they used it. These cultures include the Mayans, Indians, Greeks, and Chinese, India and Greece.