70 ! select all of the expressions that are equivalent to 4 square root of 5. a. 2 square root of 20. b. 6^1/2-5^1/2 c. 3*5^1/2+5^1/2 d. 4* 5^1/2 e. 2 square root of 10 f. 3*5^1/2

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