The line passing through (­3,4) and (0,3) is perpendicular to the line passing through (5,7) and (4,x). What is the value of x?

What are the co­ordinates of the mid point of the segment joining points C(5,­-2) and D(­-1,8).

What is the value of (1+cosA)/(1-­cosA)?

A can do a work in 15 days and B in 20 days. If they work on it together for 6 days, then what fraction of work is left?

If 1/√(1 -­ sin2A) = x, then the value of x is

A shopkeeper, sold cocoa seeds at the rate Rs 1,230 a kg and bears a loss of 5%. Now if he decides to sell it at Rs 1,353 per kg, what will be the result?

9 hrs after a goods train passed a station, another train travelling at a speed of 72 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 3 hours. What is the speed of the goods train?

2*[­0.3(1.3 + 3.7)] of 0.8 = ?