Three different items are weighed in pairs. For example, item A is weighed with item B. These pairs of items are weighed as 11kg, 12kg and 13kg. What is the weight of all three times together? a) 15kg b) 18kg c) 21kg d)24kg e)28kg

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

Which expression is not a polynomial?

20 points for the brainliest? drag each tile to the correct box. not all tiles will be used. arrange the steps to solve the equation . plz