Use the associative property of addition to find the total of 4,12 and 18

The correct answer is the alternative because the associative property of the sum states that despite of how the numbers are grouped, the result is not affected

Step-by-step explanation:

4 + 12+ 18 = (4+12)+18  --> one form to be grouped (note parenthesis)                            = 4 + (12 +18) --> Second form to be grouped

Hence:

(4+12)+18 = 4+(12+18)  (Associative property)

step-by-step explanation:

10.50 + taxes which added up to 11.50

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.