What is the sum of 5.3 x 10^5 and 3.8 x 10^4in scientific notation?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

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