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erastova [34]
3 years ago
11

The dimensions in inches of a shipping box at You Bring It, We Ship It can be expressed as width x, length x + 5, and height 3x

- 1. The volume is about 7.6 ft3. Find the dimensions of the box in inches. Round to the nearest inch.
Mathematics
2 answers:
Fantom [35]3 years ago
8 0
<span>
 By definition we have that the volume is given by:
</span> V=(w)*(l)*(h)&#10;
<span> Where,
 w: with
 l: length
 h: height
 Substituting values we have:
 </span>7.6 = (x) * (x + 5) * (3x-1)&#10;
<span> Rewriting:
</span> 7.6 = 3x ^ 3 + 14x ^ 2 - 5x&#10;
<span> We look for the roots of the polynomial:
</span> x1 = -4.9&#10;&#10; x2 = -0.6&#10;&#10; x3 = 0.85
<span> We discard the negative roots because we want to find dimensions.
 Thus, the dimensions are:
</span> w = 0.85 feet = 10.2 inches&#10;&#10; l = 5.85 feet = 70.2 inches&#10;&#10; h = 1.55 feet = 18.6 inches
<span> Answer:
 the dimensions in inches are:
 w = 10.2 inches
 l = 70.2 inches
 h = 18.6 inches
</span>
alexira [117]3 years ago
5 0

Answer: Its 15 in. by 20 in. by 44 in.

Other answer is wrong


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