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.
The high degree of skill in mathematics led to advancements in many other fields, such as astronomy, cartography, surveying and engineering, commerce, art, and architecture. The best-known contribution by early Muslim mathematicians was the transfer of Indian numerals, the concept of zero, and its notation. This transfer was a direct result of the openness of Muslims to new ideas, and the burst of exploration and travel, collection of books and scholarly work from every civilization Muslims encountered.