Which mathematical property is demonstrated? 5⋅7⋅4=5⋅4⋅7

associative property of addition

associative property of multiplication

commutative property of multiplication

commutative property of addition

Which expression gives you the distance between the points (5,1)and(9,-6)

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y