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In an A.P. if S(n) = 5n^(2) -3n find the...

In an A.P. if `S_(n) = 5n^(2) -3n` find the A.P.
OR
From the adjoining figure of a rectangle, find the values of x ond y.

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AGRAWAL PUBLICATION-SAMPLE PAPER 10-EXERCISE
  1. What is the HCF of the smallest prime number and the smallest composit...

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  2. Write a quadratic equation, sum of whose roots is -3 sqrt(2) and thei...

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  3. In an A.P. if S(n) = 5n^(2) -3n find the A.P. OR From the adjoinin...

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  4. Find a point which divides the join of A (-3, 4) and B (9,6) internall...

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  5. If the distance between the points P(2, - 3) and Q (10, y) is 10 units...

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  6. Draw a line segment of length 7 cm and divide it in the ratio 2:3.

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  7. What number should be added to the polynomial, x^(2)+7x-35, so that 3 ...

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  8. For what value of k, do the equations 3x - y + 8 = 0 and 6x - ky = -16...

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  9. The 4th term from the end of an AP -11, -8, -5, …, 49 is

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  10. If the curved surface ared of a sphere is 4 pi sq m. then find the di...

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  11. What is surface area of the resultant cuboid, obtained on joining 2 id...

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  12. If DeltaABC is right angled at C, then find the value of cos (A + B)

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  13. A letter is drawn at random from the letters of the word ERROR. What i...

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  14. If cos (A+B) =0 and sin (A-B) = (sqrt(3))/(2) then calculate the value...

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  15. In triangle ABC, right-angled at B. if tan A = 1/sqrt(3),find the valu...

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  16. If a fair dice is thrown once, find the probability of getting a numbe...

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  17. In the given figure, PS is the bisector of angleQPR . If PO = 15, PR ...

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  18. If in two triangles ABC and PQR, (AB)/(PQ) = (BC)/(RP), then for the t...

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  19. If 6^(th) term and 8^(th) term of an A.P. are 12 and 22 respectively,...

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  20. Determine zeros of polynomial p(x) = x^(3) -7x .

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