2) The Sirius-Y54 uses a nuclear reactor as its energy source. If No is the initial mass of the fuelrods before take-off and N is the mass of the fuel rods remaining, and if:​

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer