Which figure has at least one acute angle ,one obtuse angle and one right angle?​

Carlos has 4/5 of a tank of fuel in his car. he uses 1/10 of a tank per day. how many days will his fuel last?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer