A penny dropped from the top of the tallest building in town takes 10.2 seconds to reach the street. What is the height of the building? Sqrt of d = t x sqrt of 4.9

1. are the triangles similar and if so why? what is the value of x? show your work.

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

Which expression is equal to (f+g)(x)?