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Novosadov [1.4K]
3 years ago
6

The volume of a right circular cone increased by a factor of 25. If the height remained fixed, by what factor was the radius cha

nged? A. 5 B. 25 C. 125 D. 225
Mathematics
1 answer:
suter [353]3 years ago
6 0
The answer will be D.

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Square ABCD and isosceles triangle BUC are drawn to create trapezoid AUCD. Square A B C D and triangle B U C are attached at sid
Art [367]

Answer:

d) 135º

Step-by-step explanation:

Note that the angle DCU is the sum of the angles DCB and BCU. The angle DCB is 90º because A B C D is a square, then all its angles are equal to 90º.

After attaching B U C to A B C D, we obtain a trapezoid A U C D. Since A U C D has at least one pair of parallel sides, then AU should be parallel to CD, thus the angle CBU must be 90º.

B U C is isoceles, so we conclude that other two angles must have the same size, and due to the sum of the angles of a triangle being 180º, then both BUC and BCU are equal to 45º

As a result, the angle DCU is equal to 90º+45º = 135º. Option d is the correct one.

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3 years ago
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If 2/5n+4=20, what is the value of n?
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2/5n + 4 = 20
/5 /5
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The answer to your question is 48
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2 years ago
What is a quadratic function in standard form given the roots -4 and -1
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Step-by-step explanation:

a=-4

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a2-2a-8

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Add me fightingking450
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Answer:

on what? I will, but on what?

3 0
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Betty had $70. She bought a necklace for $9 and a ring for $7. Which expression correctly shows the total money Betty has left?
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70 - 9 - 7 = x 70 being the original amount 
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3 years ago
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