Nasa launches a rocket at
t=0 seconds. its height, in meters above sea-level, as a function of time is given by

h(t)=−4.9t2+124t+416.

assuming that the rocket will splash down into the ocean, at what time does splashdown occur?

the rocket splashes down after .

how high above sea-level does the rocket get at its peak?

the rocket peaks at above sea level.

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.