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The circle at left above is tangent to the x
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17 Mar 2021, 07:19
17 Mar 2021, 07:19
Expert Reply
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Question Stats:
46% (02:01) correct
53% (01:39) wrong based on 73 sessions
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GRE The circle at left above is tangent to the x- and y-axes, and has radius equal to 3..jpg [ 8.13 KiB | Viewed 7758 times ]
The circle at left above is tangent to the x- and y-axes, and has radius equal to 3. The circle at right above is tangent to the x-axis and to the other circle and has radius equal to 4.
Quantity A |
Quantity B |
The slope of the line containing the centers of the two circles. |
\(\frac{1}{7}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: The circle at left above is tangent to the x
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17 Mar 2021, 09:58
17 Mar 2021, 09:58
I think the OA is incorrect Carcass.
The coordinates for the center of the first circle are (3,3). The x coordinate for the second circle can be found by adding the diameter of the first circle to the radius of the second, so the coordinates are (10, 4). Therefore, the slope of the lines is (4-3)/(10-7), or 1/7. Thus the correct answer should be (C).
The coordinates for the center of the first circle are (3,3). The x coordinate for the second circle can be found by adding the diameter of the first circle to the radius of the second, so the coordinates are (10, 4). Therefore, the slope of the lines is (4-3)/(10-7), or 1/7. Thus the correct answer should be (C).
Re: The circle at left above is tangent to the x
[#permalink]
17 Mar 2021, 10:01
17 Mar 2021, 10:01
Expert Reply
Papist wrote:
I think the OA is incorrect Carcass.
The coordinates for the center of the first circle are (3,3). The x coordinate for the second circle can be found by adding the diameter of the first circle to the radius of the second, so the coordinates are (10, 4). Therefore, the slope of the lines is (4-3)/(10-7), or 1/7. Thus the correct answer should be (C).
The coordinates for the center of the first circle are (3,3). The x coordinate for the second circle can be found by adding the diameter of the first circle to the radius of the second, so the coordinates are (10, 4). Therefore, the slope of the lines is (4-3)/(10-7), or 1/7. Thus the correct answer should be (C).
No Sir
it is correct. see also above the explanation by the moderator
regards
