firstly chain rule is dy/dx = dy/du * du/dx
a) y = 5u² + u - 1 hence dy/du = 10u +1
u = 3x +1 hence du/dx = 3
so dy/dx = 3(10u +1) {sub in u and expand}
b) y= u^-2 hence dy/du = -2u^-3
u=2x+3 hence du/dx = 2
so dy/dx= 2(-2u^-3) {sub in u}
All you have to do is add those two numbers given and subtract by 180. all of the angles shall add up to 180 if not then you dic something wrong
I believe that the answer is C sorry if it is wrong.
Answer: 5.6 ft
Step-by-step explanation:
A square has equal sides that all have x length. The area of the square would be x^2.
x^2 = 32 ft^2
x = 5.6 feet, to the nearest tenth.
[The actual value is 5.65685 feet. but the questions says round to nearest tenth.]
