Divide both sides by 
:
![x\dfrac{\mathrm dy}{\mathrm dx}+y=\dfrac{\mathrm d}{\mathrm dx}[xy]=-\dfrac{\sec(xy)}{x^3}](https://tex.z-dn.net/?f=x%5Cdfrac%7B%5Cmathrm%20dy%7D%7B%5Cmathrm%20dx%7D%2By%3D%5Cdfrac%7B%5Cmathrm%20d%7D%7B%5Cmathrm%20dx%7D%5Bxy%5D%3D-%5Cdfrac%7B%5Csec%28xy%29%7D%7Bx%5E3%7D)
Integrate both sides to get
where 
and 
are constants, and divide by 
to solve for 
:
An exact solution (not in terms of a definite integral, anyway) doesn't seem likely...
Multiples of 8 that are less than 60: 8,16,24,32,40,48,56,
so the 8th run is at 8.4 am ; the 10th run is at 8.20 so u only have to wait a minute.
2-I suppose it's the third answer.
3-we can't know how many cars drive by in x minutes without knowing the value of x!
Simplifying
2x + 3y = 1
Solving
2x + 3y = 1
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3y' to each side of the equation.
2x + 3y + -3y = 1 + -3y
Combine like terms: 3y + -3y = 0
2x + 0 = 1 + -3y
2x = 1 + -3y
Divide each side by '2'.
x = 0.5 + -1.5y
Simplifying
x = 0.5 + -1.5y
Answer:
4
Step-by-step explanation:
4*10=40
40-36=4
hope this helps :)
