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Find the value of: |(5,3),(-7,-4)| a) -...

Find the value of: `|(5,3),(-7,-4)|`
`a) -1`
`b) -41`
`c) 41`
`d) 1`

A

-1

B

-41

C

41

D

1

Text Solution

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CHETANA PUBLICATION-Linear equations in two variables-EXERCISE
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  2. For simultaneous equations in variables x and y, Dx=49,Dy=-63, D=7 the...

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  3. Find the value of: |(5,3),(-7,-4)| a) -1 b) -41 c) 41 d) 1

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  4. To solve x+y=3,3x-2y-4=0 by determinant method, find D.

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  5. ax+by=c and mx+ny=d and an ne bm then these simultaneous equations hav...

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  6. The general form of linear equation in two variables is: a) ax+b=0 b...

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  7. …………...........is one of the solution of equation 3x-5y=10 : a) (0,2) ...

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  8. If 12x+13y=29 and 13x+12y=21 then the value of x+y is

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  9. Express the following information in mathematical form using x and y v...

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  10. Write Dx for the following simultaneous equations 3x+4y=8,x-2y=5 a) |(...

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  11. ………………..is the solution of given simultaneous equation x-y=7,x+y=11 a)...

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  12. When we consider two linear equations in two variables, such equations...

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  13. ………….is not a linear equation in two variables. a)x+7y=1 b)3x+4y-xy=0 ...

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  14. The linear equation in two variables is…………..a)3x+9=sqrt 2y+2 b)3x-4y+...

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  15. The pair of simultaneous equations from the following is…………………(1)2x+2...

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  16. Equation of X axis is……………..a)x=0 b)y=0 c)x=b d)y=a

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  17. The co-ordinates of the point of origin are……………a)(0,0) b)(1,0) c)(0,1...

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  18. If the value of the determinant |(m,-2),(2,1)| is 7, then value of m i...

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  19. x and y are the dimensions of a rectangle and its perimeter is 64. Thi...

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  20. The value of determinant |(5,2),(7,4)| is…………..a)6 b)-6 c)34 d)-34

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