The wheel of a small dirt bike has a radius of 50cm, The axle has a radius of 25cm. What is the mechanical advantage of the wheel & axle?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0