Find the square root of 81x^6 when x is grater than or equal to 0

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

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document