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.
mayans also grew beans, squash, avocados, pears, sweet potato's, guava, chili peppers, papayas and tomatoes. Mayans used a farming technique called milpa,also known as the slash and burn technique.the Mayans would burn down the land that was covered and the cut down the remaining foliage. This technique posed a problem because the land wouldn't last very long. The Mayans cycled through different areas to keep a stable farming.