Find the coordinates of the image of point A(3, –9) after a rotation of 90 degrees clockwise about the origin.

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).

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day

Which of these triangle pairs can be mapped to each other using a single translation? cof hn