Which of the following sets of numbers could not represent the three sides of a right triangle? \{39,80,89\}{39,80,89} \{51,68,85\}{51,68,85} \{48,64,80\}{48,64,80} \{13,48,50\}{13,48,50}

Milk and ice cream are mixed together for a recipe. the total volume of the mixture is 1 cup. if the milk contains 2% fat, the cream contains 18% fat ,and the mixture contains 6% fat ,how much cream is in the mixture