Which property is illustrated below (a + b) + c = a + (b + c)
and
(ab) = a(bc)
A Commutative Property
D
B Associative Property
C Distributive Property
D) Identity Property
E Inverse Property

Ihave trouble finding the nth term of a linear sequence

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box