What is differenciation ​

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?