Miri

Three quarters are tossed, and a tail appears on at least one of them. What is the probability that at least one head appears? Express your answer as a common fraction. I'm confused on this problem. I don't even know what the problem is asking. :D

A man is standing 14 m away from the centre of a spinning wheel that is 4 m off the ground, spins at 4 rotations a second and has a diameter of 3 m. If the man is 1.5 m tall, how close does his head get from any part of the wheel?

The vertical location of the tip of a clock’s second hand (y) relative to the clock’s center measured in centimetres is modelled by the equation y= 3cos (πs/30), where s is the number of seconds that have passed. a) How long is the second hand, and where...

A bat flying at a speed of 5 m/s chases an insect flying in the same direction. If the bat emits a 40 kHz sound and hears the eco of 40 kHz. What is the speed of the insect? Consider the speed of sound is 340 m/s