The polynomial x^2-18x+81 represents the area (in square feet) of a square courtyard. Write an expression for the perimeter of the courtyard.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

the answer is su.k.my? ? co.kc

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck