over the past seven days, mrs. cho found that the temperature outside had dropped a total of 35
degrees. find the average change in temperature each day.
purse 2 • chapter 3 integers

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

X2 + y 2 = 36 x + y = 6 solve the system of equations.

The anwser cause i do not understand just plez