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Sliva [168]
3 years ago
14

If a triangular cross-section with coordinates at (1, 1), (1, 4), and (3, 1) is rotated about the line x = 1, what will be the r

esulting three-dimensional object?

Mathematics
2 answers:
trasher [3.6K]3 years ago
6 0

Answer:

the answer i A

Step-by-step explanation:

Alik [6]3 years ago
5 0

Answer:

The resulting three-dimensional object will be a cone

Step-by-step explanation:  

Plot the figure to better understand the problem'

we have

a triangular cross-section with coordinates at (1, 1), (1, 4), and (3, 1)

The draw in the attached figure

we know that

When rotating a a right triangle about a leg, the three dimensional figure formed is a cone

The radius of the cone will be equal to the base of right triangle and the height of the cone will be equal to the height of the triangle

so

The radius of the cone will be equal to 2 units and the height of the cone will be 3 units

see the attached figure to better understand the problem

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Answer:

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Step-by-step explanation:

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2 years ago
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creativ13 [48]
-4.5x-2y=-12.5 and 3.25x-y=-0.75
we first multiply the second equation by -2
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so yo get (-4.5x-6.5x)=(-12.5-1.5)
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now we plug in x into any equation to solve for y
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5 0
3 years ago
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Reika [66]
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4 0
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In a sample of 77 children , the mean age as at which they first began to combine words was 16.51 months
astraxan [27]

Answer:

Mean age = 1271.27

Step-by-step explanation:

No of children = 77

The age at which children first began to combine words = 16.51 months

Mean age = No of children × age at which children first began to combine words

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                 = 1271.27

Mean age = 1271.27

7 0
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