Verbal Supernovas in the Milky Way are the likeliest source for most of the cosmic rays reaching Earth. However, calculations show that supernovas cannot produce ultrahigh-energy cosmic rays (UHECRs), which have energies exceeding 1018 electron volts. It would seem sensible to seek the source of these...

Math The average (arithmetic mean) of 4 donations to a charity was $80. Two of the 4 donations were $90 and $60. Quantity A Quantity B The average of the other 2 donations $80 A)The quantity in Column A is greater. B)The quantity in Column B is greater. C)The two quantities are equal. D)The...