Answer:
x= 3 inch should be turned up on each side
Step-by-step explanation:
Let the height of trough be x.
Width of trough be 12 - 2x.
and length of trough = 120 inch
Volume of trough, V = L×W×H = 120 × (12-2x) × x = 120x(12 - 2x)
For maximum volume, we find V' = 0
i.e 1440 -480x = 0
or x =
or x= 3
Hence x= 3 inch should be turned up on each side
Answer:
13x
because you would comibne like terms, so you add the 8 and 5.
Answer:
(x,y) - (x + 1, Y + 1), (X,Y) - (y,x)
Step-by-step explanation:
Take B (-3, 0) as example
(-3,0) -> (-2, 1) -> (1, -2)
Step-by-step explanation:
2i/3-5i
2i/7i
answere-2i/7i
9. You need an exact answer. So I will give you it but I'll also give you an approximation because it might help you understand it more.
Because we know the cosine fo theta, we can evaluate the inverse cosine of -2/3 first to find theta.
= 131.81° approx.
Because 131.81° is in the second quadrant its third quadrant partner is 228.19°. Which would make the sine 0.75 approximately.
But we need an exact answer I suppose so which is this disgusting mess...
. I know it looks scary but it is basically all the steps we just did but without evaluating anything.
This can be simplified using: sin(x− y) = sinxcosy−cosxsiny
To... ![-sin(cos^{-1}(\frac{-2}{3}))](https://tex.z-dn.net/?f=-sin%28cos%5E%7B-1%7D%28%5Cfrac%7B-2%7D%7B3%7D%29%29)
answer: ![-sin(cos^{-1}(\frac{-2}{3}))](https://tex.z-dn.net/?f=-sin%28cos%5E%7B-1%7D%28%5Cfrac%7B-2%7D%7B3%7D%29%29)
10. Okay. So because we have a point we can say that...
θ = ![tan^{-1}(-9/11)](https://tex.z-dn.net/?f=tan%5E%7B-1%7D%28-9%2F11%29)
sin(θ) = +sin(
)
11. arcsin(-0.37) =
= -21.72°+2kπ or 201.72°+2kπ approx. where k has to be an integer
answer: idk if you want one or more solutions so I gave you them all.
12. arccos(-√3/2) = ![cos^{-1}(\frac{-\sqrt{3} }{2}) = \frac{5\pi }{6}+2k\pi, \frac{7\pi }{6}+2k\pi](https://tex.z-dn.net/?f=cos%5E%7B-1%7D%28%5Cfrac%7B-%5Csqrt%7B3%7D%20%7D%7B2%7D%29%20%3D%20%5Cfrac%7B5%5Cpi%20%7D%7B6%7D%2B2k%5Cpi%2C%20%5Cfrac%7B7%5Cpi%20%7D%7B6%7D%2B2k%5Cpi)
Remember that "k" must be an integer.
answer: 5π/6