America just bought a new Ferrari. She goes 78.3 miles in 1.2 hours. What is her average speed?

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).