Solve the quadratic equation
3x2 - 14x - 5 = 0
(the 2 is meant to be squared)
a) x = -3, and x = 5
b) x = 3, and x = -5
eliminate
c) x = -
1
3
, and x = 5
d) x =
1
3
, and x = -5

(and the spaces between the numbers at the bottom of the choices r numbers)
pls

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

answer is x<