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kumpel [21]
3 years ago
14

In the angle below, points B and C are fixed, but AB can rotate in space around BC A If ZABC is always 45° what 3-dimensional sh

ape is created by the rotating segment? Come cylinder pyramid triangular prism​

Mathematics
1 answer:
inysia [295]3 years ago
7 0

Answer: Choice A) cone

One way to picture this is to think of a propeller. As the propeller spins, it carves out a 3D space even though the blade is "2D" in a sense.

If we spin everything around segment BC, we get a 3D cone forming. The base of the cone is vertical and it has a radius of AC. The height of the cone is segment BC. It might help to rotate the paper 90 degrees clockwise so that BC is vertical.

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7nadin3 [17]

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4 0
3 years ago
A see-saw is 25 feet long with a fulcrum in the middle of the board. If a 60 lb. child sits three feet from the fulcrum, what is
My name is Ann [436]

Answer:

14.4 lb

Step-by-step explanation:

In a see-saw in equilibrium, the torque generated by one side needs to be the same generated in the other side. The torque is calculated by the product between the mass and the distance to the center of the see-saw.

The torque generated by the child is:

T1 = 60 * 3 = 180 lb*feet

So, the torque generated by the weight needs to be higher than T1 in order to lift the child.

The lowest mass is calculated when the mass is in the maximum distance, that is, 12.5 feet from the center.

So, we have that:

T2 = 180 = mass * 12.5

mass = 180/12.5 = 14.4 lb

So the lowest weight is 14.4 lb

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3 years ago
Help on math homework plz help​
FrozenT [24]

Answer:

$1.40

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Subtract. 4.95-3.55 is 1.40

4 0
2 years ago
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How many bowls of sugar can you feel with 1 kg
ra1l [238]

We need to know the sixe of the bowls.

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Insert parentheses to make each number sentence true 42 13. 245 62 1 15 22 16. 14 6.6 0.2 0.4 25 15. 25 24 13 x 2 31
vovikov84 [41]
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