Between 9 AM and 10 AM one hundred airplanes departed from Newark Airport. Ten of the airplanes were delayed by an hour each. Of the remaining airplanes, half left on time and half were delayed by an average of 20 minutes. To the nearest whole minute, how long was the average flight delay

27 minutes

Step-by-step explanation:

Given that :

Total number of planes = 100

10 planes were delayed by an hour each= 60 minutes;

Total delay time for the 10 planes = (60 * 10) = 600 minutes

Of the 90 remaining :

Half (45) left on time = no delay

(Delay2) : Half (45) experieced a average delay of 20 minutes.

Total delay time for the 45 planes = (45 * 20) = 900

Hence,

Overall delay time = (600 + 900) = 1500 minutes

Number of planes delayed = (10 +45) = 55 planes

Average flight delay :

(Overall delay time / number of planes delayed)

(1500 / 55) = 27.27

= 27 minutes ( to the nearest minute)

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°