Explain how alfred's argument contradicts his initial assumption proving that the sum cannot be rational. a) if c is rational, either b or a would have to be rational as well. b) if a is rational, either b or c would have to be rational as well. c) if b is irrational, the difference of two rational numbers could never be equal to it. d) if a + b is rational, then a and a could be either rational or irrational.

The table shows the distances travelled by a paper aeroplane. a. find the range and interquartile range of the data. the range is feet. the interquartile range is __feet. b. interpret the range and interquartile range of the data. __ feet the distances travelled by the paper aeroplane varied by no more than__ feet. the middle half of the distances travelled by the paper aeroplane varied by no more than __ feet.