A buoy floating in the sea bobbing in simple harmonic motion with period 4 seconds and amplitude 12 in. Its displacement d from sea level at time t=0 seconds is 0 in and initially moves downward. Give the equation modeling the displacement d as a function of time t.

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling