Mahala is making a piece of jewelry that is in the shape of a right triangle. the two shorter sides of the piece of jewelry are 9mm and 12mm. find the perimeter of the piece of jewelry.

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?