A passenger jet can fly 804 miles in 2 hours with tailwind but only 776 miles in 2 hours into a headwind. Find the speed of the jet in still air and the speed of the wind

The jet goes 395 mph in still air, the wind speed is 7mph.

Step-by-step explanation:

Just average 402 and 388, giving you 395 (speed in still air). Then, find the difference between that speed and the headwind/tailwind speed (395-388=7) giving you 7 (the wind speed). The wind accelerated the jet by 7mph on the tailwind and deccelerates it by 7mph on the headwind.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3