Simplify the following radical expression. 5x22y⎯⎯⎯⎯⎯⎯⎯⎯⎯√

5x^22y should be under a square root sign, paste would not work

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?