Given P(A) = 0.6, P(B) = 0.45 and P(AorB) = 0.66 , find the value of P(A and B) , rounding to the nearest thousandth, if necessary .

P(A and B) = P(A) + P(B) - P(A or B)

                 = 0.6 + 0.45 - 0.66

                 = 0.39

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c