You have to use implicit derivative
dy / dx = y'
xy^3+y=3x
y^3 + 3xy^2 y' + y' = 3
[3xy^2 + 1) y'= 3 - y^3
3 - y^3
y' = ----------------- <-----------answer
3xy^2 + 1
The train will travel 202.5 miles in 4.5 hours. :)))
Answer:
can you explain yourself more please
The cost with the coupon is $0.76 less.
3.79 - 3.03
Polygons whose corresponding angles are congruent and whose corresponding sides are proportional are called similar polygons.