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Find the value of k for which the polyno...

Find the value of k for which the polynomial `21 x ^(2) - 3 kx + 7` has real roots.

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AGRAWAL PUBLICATION-SAMPLE PAPER 8-EXERCISE
  1. What is the HCF of 40 and 54 ?

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  2. Find the value of k for which the polynomial 21 x ^(2) - 3 kx + 7 has ...

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  3. If the value of 'x' in the equation 2x + 3y = 13 is 2, then find the c...

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  4. Find the ratio in which x-axis divides the join of points (2, -3) and ...

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  5. The coordinates of the point P dividing the line segment joining the p...

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  6. If Delta ABC ~ Delta DEF and AB = DE, BC = 8 cm, then the value of EF...

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  7. ABC is a right triangle, right angled at C and AB = sqrt2 BC. Then, fi...

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  8. The ratio fo the height of a tower and the length of its shadow is sqr...

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  9. Find the 10^(t h)term of the AP : 2, 7, 12, . . .

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  10. Find the sum of the first 10 multiples of 2.

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  11. Write a quadratic polynomial whose zero are 2 and -5.

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  12. The sum of the digits of a 2-digit number is 10. A number is selected ...

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  13. An unbiased dice is rolled once. What is the probability of getting an...

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  14. If theta is the angle (in degrees) of a sector of a circle of radius...

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  15. A cylindrical pencil sharpend at one edge is the combination of

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  16. If one zero of p (y) = 4y ^(2) - 8 ky - 9 is negative of other, then f...

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  17. Find the value of k if the given system of equations 5x + ky = - 7 and...

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  18. If &nbspDelta ABC ~ Delta PQR &nbsp , perimeter of Delta ABC = 32 cm, ...

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  19. Jawaharlal Nehru Stadium in New Delhi is conducting the annual sports ...

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  20. Jawaharlal Nehru Stadium in New Delhi is conducting the annual sports ...

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