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ceukhunarfi
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If A= (7.00i 9.00j ) units, B = (9.00i + 4.00j ) units, and C = (25.0i + 20.0j ) units, determine a and b such that a A + bB +C = 0.
a = ?
b = 2?
 2 years ago
 2 years ago
ceukhunarfi Group Title
If A= (7.00i 9.00j ) units, B = (9.00i + 4.00j ) units, and C = (25.0i + 20.0j ) units, determine a and b such that a A + bB +C = 0. a = ? b = 2?
 2 years ago
 2 years ago

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runriot Group TitleBest ResponseYou've already chosen the best response.0
The condition aA + bB +C=0 gives a system of 2x2 linear system which you can solve by simple elimination. I'll give you the system. Simple algebra will do the rest... 7a  9b = 25 9a + 4b = 20
 2 years ago

Ahmad_Shadab Group TitleBest ResponseYou've already chosen the best response.0
For condition aA+bB+C=0 can be written like a(7.00i9.00j)+b(9.00i+4.00j)+(25.0i+20.0j)=0 (a7.00b9.00+25.0)i +(a9.00+b4.00+20.0)j =0 From the above equation if you campare the left hand side with right hand side you see that all the coefficient should be zero to satisfy the condition then 7a9b+25=0 9a+4b+20=0 Just solve the above two equation and you will get the answer
 2 years ago
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