If the speed of sound is 1230 km/h, calculate the speed of sound in metres per second. Write down your answer correct to the nearest metre.

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

What is sin 7x/4 ? i need on this urgent trig

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.