Mathematics
Find the nature of the roots of the quadratic equation 3x2 - 7x + = 0. If real roots exist, find them.
Related Questions
The daily wages of 160 workers in a building project are given below :
Wages (in ₹) No. of workers 130-140 48 140-150 34 150-160 26 160-170 32 170-180 20 Draw a cumulative frequency curve and use it to estimate :
(i) the median wage
(ii) semi-inter quartile range
(iii) percentage of workers who earn between ₹ 145 and ₹ 165.
The mean of the following distribution is 50 and the frequency of the class-interval 20-40 is m, find the value of m.
Class-interval Frequency 0-20 17 20-40 m 40-60 32 60-80 24 80-100 19