Use the chain rule:

We have


so we get

Alternatively, you can substitute <em>u</em> in the definition of <em>y</em> and differentiate with respect to <em>x</em> :

Answer:
Length: 27 width:9
Step-by-step explanation:
27 + 27 + 9 + 9 = 72 and 27 is 3 x 9
Answer:
Least to greatest #1 - 0.3, 0.35, 0.5, 0.53, 3.5
Least to greatest #2 - 9.6, 9.67, 9.7, 9.76, 19.6
<em>Least meaning the lowest/smallest number.</em>
<em>Greatest meaning the highest/ biggest number.</em>
Answer:
A) 2x*2 +6x -3x - 9= 2x*2 +3x -9
B) 2yx*2 +2yx +2y +3x*2 +3x +3
C) 36x*2 y +48yx +3xy*2 + 4y*2
D) 2x*3 - 4x*2 y + 3x -6y