Question

Q14: For what values of m, the system of equations x+2y=5 and3x+my=-15 has no solution?

Q15: If a pair of linear equations is consistent, then write the nature of the lines. Q16: Check whether x-2x= (-2) (3-x) is quadratic equation?

Q17: Find the roots of the equation x-3x-10=0, by factorization.

Q18: Find the mean of first five composite numbers. Q19: Write the empirical relation between mean, mode and median.

Q20: Write the section formula.

SECTION B (Each question carries 3 marks)

Q21: Given that HCF (306,657) =9, find LCM (306,657) Q22: Find a quadratic polynomial, the sum and product of whose zeroes are -3 and

2, respectively.

Q23: On comparing the ratios ajaz, bı/bz, C1/C2, find out whether the following pairs of linear equation is consistent or inconsistent: 3x+2y=5; 2x-3y=7

Q24: Find two numbers whose sum is 27 and product is 182. Section- C [Each question carries 4 marks)

Q38: If A and B are (-2,-2) and (2,-4) respectively, find the coordinates of P such that

AP=AB and Plies on the line segment AB. Q39: The following table gives the literacy rate (in percentage) of 35 cities. Find the

mean literacy rate. 45-55

Literacy

rate (in %) Number of 3

cities

55-65

10

65-75

11

75-85

8

85-95

3​

Answer 1

Answer:

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