Does anyone know the answer to this question on edg 2020

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Equation for the calculation double 2 and then add 5

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%