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3.The discriminant of the quadratic equation 4x2 - 6x + 3.0 is(A) 12(B) 84(c) 23D) - 12For the following frequency distribution:Class: 0-5 5-10 10-15 15 - 20 20 - 25Frequency: 8 10 19 25 8The upper limit of median class is(A) 15(B) 10(C) 20(D) 25

Answer»

kuch ni mode median ka hai formula lagega Bhai sahab

question no. 3 ans:DD=b²-4ac. =(-6)²-4(4)(3). a=4,b=-6,=36-48. c=3=-12

question 4total(n)=60=n/2=60/2=30so,median class=20-25upper limit=20

median is a 20 and frequency is

and his sum is upper limit is 15

-12

(3) D Are the answer to given questions

(4) D

Question no÷3Answer÷ D) -12

answer is c of this question

4rth question answer-12

upper limit of median class is 20

d=b^2-4ac36-4*4*3d=-12

20_25 it is a correct answer

answer c is correct answer for this question

iska answer 15 aayega



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