A ball is thrown vertically upward from the ground. Its distance in feet from the ground in t seconds is s(t)=224t−16t. After how many seconds will the ball be 720 feet from the​ ground?

Me. i can't figure out this question. give an explanation too. .

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy