M is a 2 × 2 matrix with eigenvalues 4 and 9. The eigenvalues of M2 are

As you grow older, an injury to your _________ may take longer to _________.

In a 500 m race, P and Q have speeds in the ratio of 3 ∶ 4. Q starts the race when P has already covered 140 m. What is the distance between P and Q (in m) whe...