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I. 4x^2+ 3√7 x-7 =0 4x^2+ 4√7 x-√7 x-7 =0 4x(x+ √7)- √7 (x+ √7)= 0 (x+ √7) (4x- √7)= 0 x= -√7 , √7/4 Or x= (-7√7)/7 , √7/4 II. 7y^2+ 4√7 y-5=0 7y^2+ 5√7 y- √7-5=0 √7 y (√7 y+5)- 1(√7 y+5)= 0 (√7 y+5)(√7 y-1)= 0 y= (-5)/√7 , 1/√7 Or y= (-5√7)/7 , √7/7 Hence, No relation can be established between x and y
A boat moving upstream takes 8 hours 48 minutes to cover a distance while it takes 4 hours to return to the starting point, downstream. What is the rati...
The difference between the downstream speed and the upstream speed of a boat is 6km/hr and the boat travels 72km from C to D (downstream) in 4 hours. Th...
A boat can cover 195 km in downstream in 10 hours and 140 km in upstream in 14 hours. Find the distance travelled by the boat in still water in 4 hours.
The speed of a motorboat in still water is 50 km/hr. If the motorboat travels 120 km along the stream in 1 hour 30 minutes, then the time taken by it t...
A boat running downstream covers a distance of 42 km in 6 hrs and covering the same distance upstream in 14 hrs. What is the speed of a boat in still wa...
Speed of boat is 20 km/hr. Speed of the stream is 20% less than speed of boat. Then find time taken by boat to go 72 km downstream?
A boat, whose speed in still water is 25% more than the speed of the current, covers 810 km downstream in _____ hours. The speed of the boat in still w...
A man can go on a motor boat with a speed of 25 km/hour in still water to a certain upstream point and come back to the starting point in a river which ...
A man can row at 4 kmph in still water. If the velocity of current is 2 kmph and it takes him 5 hour to row to a place and come back, how far is the place?
If the sum of upstream and downstream speed is 26 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 72 km in downward?