What type of sequence is shown: 80, 100, 125, 156.25

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?