Find the compound interest on 5000 at 12% interest for 15 years. if the interest is compounded semi-annually.

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).