If A+B+C=180 then prove
Cos3Acos3B+cos3Bcos3C+cos3Ccos3A=1

Suppose the probability of selling a car today is 0.28. find the odds against selling a car today.

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.