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655-705 Level|   Algebra|      
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KSBGC
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(H^2 - 2H)^(1/2) = T(1 - R^2)^(1/2)/(K(1 - g^k)), then 3H = Updated on: 05 Mar 2019, 21:29
Originally posted by KSBGC on 05 Mar 2019, 16:15.
Last edited by Bunuel on 05 Mar 2019, 21:29, edited 1 time in total.
Renamed the topic and edited the question.
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

65% (hard)

Question Stats:

51% (01:54) correct 49% (01:51) wrong based on 83 sessions

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\(\sqrt{H^2 - 2H}=\frac{T\sqrt{1 - R^2}}{K\sqrt{1 - g^k}}\), then 3H =


(1) T = 3, R = 1/2

(2) K= 1 , g = 7/16.
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E
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MoshiSenpai
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(H^2 - 2H)^(1/2) = T(1 - R^2)^(1/2)/(K(1 - g^k)), then 3H = 11 Jul 2022, 10:17
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From a quick overview, we can see that there are 5 unknown variables which are required to calculate H- T, R, K, g and k.

We need all 5 to be able to calculate H.
Statement 1 gives 2 variables.
Statement 2 gives 2 variables as well.
So none of these are sufficient individually.

Combined as well, we are still missing value of k and hence we can't calculate H.

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Naia
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(H^2 - 2H)^(1/2) = T(1 - R^2)^(1/2)/(K(1 - g^k)), then 3H = 06 Aug 2022, 09:14
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MoshiSenpai
From a quick overview, we can see that there are 5 unknown variables which are required to calculate H- T, R, K, g and k.

We need all 5 to be able to calculate H.
Statement 1 gives 2 variables.
Statement 2 gives 2 variables as well.
So none of these are sufficient individually.

Combined as well, we are still missing value of k and hence we can't calculate H.

Posted from my mobile device
But the second statement clearly says that K=1.
Combining both statements we have all variables required to find H. Why isn't C the OA?
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Dreamcatcher029
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(H^2 - 2H)^(1/2) = T(1 - R^2)^(1/2)/(K(1 - g^k)), then 3H = 06 Aug 2022, 10:34
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We have 5 variables here.
S1 gives us only 2 variable. Clearly, not sufficient.

S2 gives us only 2 variables. Not sufficient.

S1 & S2 combined gives us 2 different values of H. Therefore, we get 2 different values of 3H. Clearly, both statements together are also not sufficient.

Therefore, answer is E.
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