Answer:
2
Step-by-step explanation:
![\sqrt[3]{54} - \sqrt[3]{2}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B54%7D%20-%20%5Csqrt%5B3%5D%7B2%7D)
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Prime factorization.
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Simplify the radical.
2
Subtract.
We first need dy/dx.
dy/dx = -2sin(x/2)(1/2)
dy/dx = -sin(x/2)
We now find d^2y/dx^2.
d^2y/dx^2 = -cos(x/2)(1/2)
d^2y/dx^2 = -(1/2)cos(x/2)
If the line is parallel, the slope must also be 1/3.
Plug in the coordinates of (0,-9) into y=1/3x+b:
1) -9=(1/3)(0)+b
2) -9=0+b
3) b=-9
The sum of all the angles in a triangle is equal to 180 degrees
x = 180-(65+30) = 85 degrees
A rectangle, presumably, as the cross section is going to be whatever shape the outward faces are (in the case of a vertical cross section like this one)