The answer would be =<span><span><span>−<span>rs</span></span>+<span>5r</span></span>+<span>5<span>s</span></span></span>
Answer: 20.5
Form your equation. The formula for perimeter is (2l)(2w) or l + l + w + w, where l = length and w = width.
(l - 5) + (l - 5) + (l) + (l) = 72
Simplify and solve your equation.
4l - 10 = 72
4l = 82
l = 20.5
Since l = length, length = 20.5 and width = 15.5
You can check your work, too:
20.5 + 20.5 + 15.5 + 15.5 = 72
Answer:
Option B: (½•16)⅓
Step-by-step explanation:
The associative property states that we can add or multiply numbers in a group regardless of how those numbers are grouped. And that we will get the same answer.
For example;
x(y•z) = (x•y)z = (x•z)y
Now in our question, we want o evaluate; ½(16•⅓)
Using the associative property, the best expression will be: (½•16)⅓
It's the best expression because the terms in the bracket are easy to multiply out without remainder.
Thus, option B is correct