Mathematics
Solve the given equation x2 - 4x - 2 = 0 and express your answer correct to two places of decimal.
Related Questions
Study the graph and answer each of the following :
(a) Name the curve plotted
(b) Total number of students
(c) The median marks
(d) Number of students scoring between 50 and 80 marks.

In the given diagram, △ ABC is right angled at ∠B. BDFE is a rectangle. AD = 6 cm, CE = 4 cm and BC = 12 cm.
(a) prove that △ADF ~ △FEC.
(b) prove that △ADF ~ △ABC.
(c) find the length of FE
(d) find area △ADF : area △ABC

Shown below is a table illustrating the monthly income distribution in a company with 100 employees.
Monthly income (in ₹ 10,000) Number of employees 0-4 55 4-8 15 8-12 06 12-16 08 16-20 12 20-24 4 Using step-deviation method, find the mean monthly income of an employee.