Two objects in outer space drift apart at an average rate of 25 kilometers every year. if the objects continue to drift apart from each other at the same rate, how many kilometers will they drift in 10 years?

are you referring to matrix mathematics!

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.