How do you ratify the denominator for 2/ 2(sqrt2)? When I multiply by sqrt2/sqrt 2 I'm still left with a radical in the denominator.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.