If a,b,c,d are in G.P. while a-2,b-7,c-9,d-5 are in A.P., then a+b+c+d is divided by?


a)2 b)3 c)5 d)7

2 years ago

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Answers : (1)

                    a=-3

b=-6
c=-12
d=-24.
2 years ago

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If (1/b+c) +(1/c+a)=(2/a+b) find a^2+b^2 please give the solution.
 
 
Take LCM , (2c+a+b)/(a+c)(b+c) = 2/a+b Cross multiply: a^2 + b^2 + 2ab + 2bc + 2ac = 2bc + 2ab + 2c^2 + 2ac This gives, a^2 + b^2 = 2. c^2 Thanks Bharat Bajaj IIT Delhi askiitians faculty
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bharat bajaj 3 months ago
 
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bharat bajaj 3 months ago
 
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R1312467 3 months ago
Trip 1-: A boat goes upstream 30 km and downstream 44 km. The total time for this journey is 10hours. Trip 2-: The same boat also goes upstream 40 km and downstream 55 km . The total time...
 
 
let the speed of the boat be v and the speed of the stream be s according to the problem 44/v+s + 30/v-s =10 55/v+s + 40/v-s =13 let v+s=x v-s=y 44/x +30/y =10 55/x + 40/y =13 solving for x...
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Sunil Kumar FP 5 months ago
 
Dear Student, There is a technical issue so please re-post the question again separately. askIITian Faculty
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Sunil Raikwar 4 months ago
 
hi the equation is 30/x+y + 44/x+y = 10 similar for d next check rd sharma fr full solution.
 
Bhuvaneswari Singh 5 months ago
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Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
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Arun Kumar 15 days ago
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