Answer:
5
Step-by-step explanation:
I think you meant 4(x - 3) + 5x - x^2.
Substituting 2 for x, we get 4(-1) + 5(2) - (2)^2 = -1 + 10 - 4 = 5
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Answer:
![\large\boxed{V=640.6\ m^3}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7BV%3D640.6%5C%20m%5E3%7D)
Step-by-step explanation:
The formula of a volume of a cone:
![V=\dfrac{1}{3}\pi r^2H](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7D%5Cpi%20r%5E2H)
r- radius
H - height
We have H = 17m and r = 6m. Substitute:
![V=\dfrac{1}{3}\pi(6^2)(17)=\dfrac{1}{3}\pi(36)(17)=\pi(12)(17)=204\pi\ m^3](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7D%5Cpi%286%5E2%29%2817%29%3D%5Cdfrac%7B1%7D%7B3%7D%5Cpi%2836%29%2817%29%3D%5Cpi%2812%29%2817%29%3D204%5Cpi%5C%20m%5E3)
![\pi\approx3.14\\\\V\approx204(3.14)=640.56\ m^3\approx640.6\ m^3](https://tex.z-dn.net/?f=%5Cpi%5Capprox3.14%5C%5C%5C%5CV%5Capprox204%283.14%29%3D640.56%5C%20m%5E3%5Capprox640.6%5C%20m%5E3)
We add 25/8 yards and 1 3/4 yards together.
First we convert 1 3/4 to an imp. fraction 7/4.
In order to add fractions, they must have the same common denominator. So we multiply both sides of the fraction 7/4 by 2 to get 14/8. Now we can add 25/8 yards and 14/8 yards together to get 39/8 yards.