Look at the example below which shows how the product property of radicals is used to simplify a radical.

3111-03-04-10-03
use the product property of radicals to simplify the following radical.
square root of negative 81 is equal to?

Can someone me and do the problem plz so i can understand it more better

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?