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If the solution rx+2y=5 and (r-5)x+3y=2 ...

If the solution rx+2y=5 and (r-5)x+3y=2 have no solution, then the value of r is

A

10

B

-10

C

-3

D

-7

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The correct Answer is:
B
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CALCUTTA BOOK HOUSE-LINEAR EQUATIONS-EXERCISE - 4.1
  1. (1, 1) is the solution of

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  2. Find the value of k for which the equations 2x+5y=8 and 2x-ky=3 will h...

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  3. If the solution rx+2y=5 and (r-5)x+3y=2 have no solution, then the val...

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  4. If the solution rx+2y=5 and (r+1)x+3y=2 have no solution, then the val...

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  5. If x= 3p and y=(2p)/5+1, then find the value of p for which x = 5y.

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  6. Find two sets of solutions of the equation ax+by+c=0.

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  7. Express the equation px+qy+r=0 in the form of y=mx+c where m and c are...

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  8. If u and v are real numbers and (u+3)^(2)+(v+5)^(2)=0, then find the v...

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  9. If x^(2)+y^(2)-6x-8y=-25, then find the values of x and y.

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  10. Find the values of x and y when x^(2)+y^(2)-2sqrt(2)x+2sqrt(5)y=-7.

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  11. Find the values of r for which the equations rx-y=3 and 4x-2y=5 will h...

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  12. Find the value of t for which the graphs of the simultaneous linear eq...

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  13. Find the value of k for which the graph of the simultaneous linear equ...

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  14. Find the values of a and b if the simultaneous linear equation ax-15y+...

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  15. Determine the condition for which the simultaneous linear equations bx...

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  16. Show that the solution set of the simultaneous linear equations 4x+3y=...

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  17. Express the following statements in the form of two simultaneous linea...

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  18. Express the following statements in the form of two simultaneous linea...

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  19. Express the following statements in the form of two simultaneous linea...

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  20. Solve each pair of the following simultaneous linear equations by draw...

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