During a family car trip, a family travels for 1 hour at 70 miles per hour. Then the family travels for 2 more hours at 55 miles per hour. What is the family's average speed during the trip? A. 58.5 mph
B. 65 mph
C. 62.5 mph
D. 60 mph

spectral lines lyman is one set

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

answer(20) psi;