Question
Maths
March 6, 2019, 8:35 p.m.
Answer
If the equation (1 m^2)x^2 2mcx c^2-a^2=0 has equal roots then show that c^2=a^2 (1 m^2).
Maths
March 6, 2019, 8:34 p.m.
Answer
The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must take the wheel make in order to keep a speed of 66 kmph?
x=a cos^3 theta and y=a sin^3 theta then prove that dy÷dx=- cube root of y÷x
x=a cos^3 theta and y=a sin^3 theta then prove that dy÷dx=- cube root of y÷x
Maths
March 6, 2019, 7:48 p.m.
Answer
Area of a rectangle get reduced by 9 square units if its length is reduced by 5 units and breadth is increased by 3units. If we increase the length by 3 units and breadth by 2 units, area increases by 67 square units. Find dimension of rectangle.
Find the greatest six digit number that are exactly divisible by 18 24 36
Maths
March 6, 2019, 7:32 p.m.
Answer
The ratio of the sum of m terms of two ap is (7n 1):(4n 27).Find the ratio of their 9th term.
A motor boat speed is 20 km/h in still water. It takes 1 hour more to go upstream than downstream to the same spot. Find the speed of the stream.
