An aircraft leaves a town X(26°N, 66°E) and flying 4700 km due south, it gets to another town Y. Calculate: (a) The radius of the line of latitude through X. (b) The latitude of Y, correct to the nearest degree. (c) The radius of the line of latitude through Y (take R=6400 km, π=22/7)

How many solutions does the nonlinear system of equations graphed bellow have?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?