Q. The probability that a contractor will get the plumbing contract is 2/3 and the probability that he will not get an electric contract is
5/9. If the probability of getting at least one contract is 4/5, what
is the probability that he will get both the contracts?

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

the answer to the expression is 83

77

step-by-step explanation: