Question

27.The equation x’+px+4=0 has two equal roots, then the value of 'p' is​

Answer 1

Answer:

Class Frequency Cumulative Frequency

0-10 12 12

10-20 13 25

20-30 25 50

30-40 20 60

40-50 10 70

Now

2

N

=35. Hence cumulative frequency just greater than 35 is 50. The corresponding class is 20−30

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