35.6 minutes
S = v*t = 8 * 40/60 = 16/3 m
=> t = s/v = 16/(3*9) = 35.555555 minutes
Solve for N by simplifying both sides of the equation, then isolating the variable.
N=700
Hope this helps, if not, comment below please!!!
Slope of line t is -1/5
If two lines are perpendicular, the product of their slopes is -1
That would be 43 divided by 23 which would equal 1.8695
Use cos sin and tan and looks up rules of cos sin tan and it will show you the rules and use those methods to plug into your equation
