Question

1)The smallest number by which 1/17 should be multiplied so that its decimal expansion terminates after three decimal places is a)17/100 b)17/1000 c) 100/17 (d) 1000/ 17

2. If 3x + 4y 7 and 10x - y =9, then the value of 4x + 6y is
a)5 (b) 6 (c) 8 (d) 10

4. The zeroes of the quadratic polynomial x² + kx + k where k ≠0,
(a) cannot both be positive (b) cannot both be negative (c) are always unequal (d) are always equal

5. The value of k for which the pair of lines 3x - y 8 and 6x - ky = -16 coincide is
a)1/2 b)-2 c)2 d)-1/2

6. What would be the HCF and LCM of p and p + 1, if p is a prime ?
(b) HCF = 1, LCM = p(p + 1) (d) None of these (a) HCF = P, LCM = p(p + 1) (c) HCF = p p + 1), LCM = 1

7.The quadratic polynornial, whose zeroes are 2 + 13 and 2 - 13. is
(a) x²- 4x + 1 (b) x²- 4x - 1 (c) x² - 2x + 1 (d) x² + 4x + 1

8. If sin theta= 1/2 and cos bita= 1/2, then the value of theta+bita is
a)30° b)60° (c) 90° (d) 180°

9. If LCM (x, 24) =48 and HCF (x, 24) =8, then x is
a) 16 b) 20 (c) 12 (d) 4

pls answer qickly no solution needed pls fast​

Answer 1

Answer:

1)The smallest number by which 1/17 should be multiplied so that its decimal expansion terminates after three decimal places is a)17/100 b)17/1000 c) 100/17 (d) 1000/ 17 2. If 3x + 4y 7 and 10x - y =9, then the value of 4x + 6y is a)5 (b) 6 (c) 8 (d) 10 4. The zeroes of the quadratic polynomial x² + kx + k where k ≠0, (a) cannot both be positive (b) cannot both be negative (c) are always unequal (d) are always equal 5. The value of k for which the pair of lines 3x - y 8 and 6x - ky = "-16" coincide is a)1/2 b)-2 c)2 d)-1/2 6. What would be the HCF and LCM of p and p + 1, if p is a prime ? (b) HCF = 1, LCM = p(p + 1) (d) None of these (a) HCF = P, LCM = p(p + 1) (c) HCF = p p + 1), LCM = 1 7.The quadratic polynomial, whose zeroes are 2 + 13 and 2 - 13. is (a) x²- 4x + 1 (b) x²- 4x - 1 (c) x² - 2x + 1 (d) x² + 4x + 1 8. If sin theta= 1/2 and cos bita= 1/2, then the value of theta+bita is a)30° b)60° (c) 90° (d) 180° 9. If LCM (x, 24) =48 and HCF (x, 24) =8, then x is a) 16 b) 20 (c) 12 (d) 4