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19wawrzkeek
28.06.2019 •
Mathematics
Mr.eldeb is designing a voting box for prom. the box must have a maximum surface area of 380 in2 with a height of 4.5 inches. if the box has a square base, what is the largest width that the box could have in inches?
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Ответ:
-4x + 9 ≤ x - 21
Now that we have the equation, we just have to solve for x.
-4x + 9 ≤ x - 21
-4x ≤ x - 21 - 9
-4x ≤ x - 30
-4x - x ≤ -30
-5x ≤ -30
-x ≤ - 6
x ≥ 6
In the end, x is greater than or equal to 6, because we had to change the entire equation from negative to positive.