Sonia has 120 blocks. She decides to stack up all the blocks so that each row
has one less block than the row below. She wants to end up with just 1 block on
top. How many blocks should she put in the bottom row?

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d. c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft