let the speed of plane in still air be x and that wind be y
therefore:
x+y=490
x-y=390
next we solve for the values of x and y, first we add the above equations. This will give us:
2x=880
x=880/2
x=440 miles per hour.
substituting the value of x in one of the equations and solving for y we get:
440+y=490
y=490-440
y=50 miles per hour
If you know the cone volume and the cone radius, then
height = 3*Volume / PI * r^2
answer is D
Faye's score on the second level is: 6x7= 42
Her total score is 14+42 = 56
1.5/d+34 is the inverse operation
