Part A: The sun produces 3.9 â‹… 1033 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 3.25 â‹… 103 seconds? (5 points) Part B: Which is the more reasonable measurement of the distance between the tracks on a railroad:

1.435 â‹… 10â’3 mm or 1.435 â‹… 103 mm? Justify your answer. PWEASE HELP!

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1