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Let the speed of boat in still water be x km/hr and that of stream be y km/hr. ATQ, ⇒ (x + y) – (x – y) = 6 ⇒ y = 3 km/hr ⇒ x = 3 × 10/3 = 10 km/hr Required time = [52/(10+3)] + [42/(10−3)] = 10 hr
If, x - y radic; 3 = 23 and radic; 3x + y = 35
Find the angle between both the lines when they intersect each other.
...If (5√P - 7√Q) = 5, [1.5P = 4Q-(R/3)+9] and (√P/√Q) = 1.6, then find out the value of ‘R’.
I. 2p2 + 5p + 2 = 0 II. 2q2 + 11 q + 14 = 0
Find the value of 'a' and 'b' which satisfy the following equations:
9a + 7b = 30
4a - 5b = 62
Find the area between the lines 18x +12y = 108, 9x + 6y = 27, x - axis and y -axis.
I. p2 – 5p + 6 = 0
II. 36q2 = 81
...The length of a line segment A, B is 10 units. The coordinates of point A are(2,3) and the value of ordinate of point B is 5. Then find the value of abs...
I. 8/(√x) + 6/(√x) = √x
II. y ³- (14)7/2 /(√y) = 0
The slope of the equation 24x+ 8y =56 is
If in two linear equations ax + by = c and dx + ey = f and a/d = b/e = c/f then, which of the following is true about the two equations?
