Operaciones con fracciones a) 3/4+5/2-2/7
b) 2/3-[ 3/4-( 7/4+5/6-1/3)+7/8]
c) -4/5 x 5/9 x -3/2
d) ( 3/2 ÷ 4/5) ÷ -2/7

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

The constitution gives congress the power to create federal courts lower than the supreme court higher than the supreme court equal to the supreme court, unaffected by the supreme court.