At the end of spring break, lucy left and drove home, driving at a rate of 40 mph. Lucy’s friend ethel left 30 minutes later, and drove 50 mph. How long did it take ethel to catch up to lucy?.

1. kepler's three laws resulted from his careful analysis of data, and were not derived from a mathematical model. a. experimental b. hypothetical c. theoretical d. observational 2. which of the following was the earliest solar system model to exist? a. aristotelian b. heliocentric c. copernican d. ptolenmiac

Cricket team of india australia and pakistan participant in 20-20 match . find the probability that india wins .

Which of these terms are associated with communication between neurons? chemical signals, electrical signals, synapse chemical signals, synapse, neurotransmitters synapse, electrical signals, chemical signals synapse, electrical signals, neurotransmitters