Please hurry Add or subtract as indicated. Make sure that your answers contain the correct number of significant digits.
o. 0.00078 mm - 0.0075 mm
p. 4203 5 - 2.85 kg
q. 4.3x10-4 kg + 3.9x10-3 r. 4.90x103 m - 7.8x103

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?