The perimeter of a rectangle is 54 cm. if the length is 2 cm more than a number, and the with is twice the same number, what is the number

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

What is the value of the expression below? (81^2)^1/8

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)