Answer
<em>length = width + 15</em>
<em>Area = length * width; area is 54 square feet.</em>
<em>Two equations are:</em>
<em>L = W + 15</em>
<em>L * W = 54</em>
<em>To solve, we substitute first equation into second equation:</em>
<em>(W + 15) * W = 54</em>
<em>w^2 + 15w = 54</em>
<em>w^2 + 15w - 54 = 0</em>
<em>(w+18)(w-3) = 0</em>
<em>w = -18 or 3</em>
<em>The width cannot be negative, so 3 is the width and since length is 15 more than width, length is 18:</em>
<em />
<em>Length = 18 feet</em>
<em>Width = 3 feet</em>
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<em />
81.14
568 divided by 7 = 81.14
3
absolute value takes the negative away
Answer:
D. 5(x + 11)= 120
Step-by-step explanation:
5 is the number of friends, and they have an unknown number of action figures before buying 11 more.
So we multiply 5 by the number of action figures they have (x) and add 11 because they all bought 11.
Then we make it equal to 120 because thats the total number of action figures.
(I know this isnt part of the question but if you solve for x, you find out that they all had 13 action figures to begin with)
Hope it helps!