The richter scale assesses the 1906 san francisco earthquake and the 1964 alaska earthquake as both being of magnitude 8.3. however, on the moment magnitude scale, the san francisco earthquake is probably equivalent to a richter magnitude 7.8 and the alaska seism is equivalent to a 9.2 the alaska earthquake was at least 100 times bigger

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225

a supercell is a thunderstorm with a deep, persistently rotating updraft. supercells are the least common form of thunderstorm yet they are potentially the most violent. large hail of greater than baseball size, strong damaging winds, and tornadoes can accompany these storms.

explanation: