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deff fn [24]
3 years ago
12

Help quick please!! Thanks

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
8 0
2x^2-y
=2 (3)^2 -(-2)
=2(9) +2
=18+2
=20

Hope this helps!
shusha [124]3 years ago
3 0
2x^2 - y for x=3 and y=-2
2(3)^2 - (-2)
2(9) + 2
18 + 2

Final Answer = 20
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Answer:

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Step-by-step explanation:

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V_{cylinder}=\pi r^2 h,

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If cylinder has diameter of 8 inches, then its radius is 4 inches. The height of the cylinder is 5 inches. Thus, the volume of the cylinder is

V_{cylinder}=3.14\cdot 4^2\cdot 5=251.2\ in^3.

The volume of the cone is

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V_{cylinder}=\dfrac{1}{3}\cdot 3.14\cdot 4^2\cdot 15=251.2\ in^3.

As you can see the cylinder and the cone have the same volume.

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