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Levart [38]
3 years ago
12

The length of a rectangle is 8 m more than 6 times the width. The perimeter is 156 m. Find width.

Mathematics
1 answer:
Alla [95]3 years ago
5 0
<span>width = x
</span><span>length = 6x + 8 

x + 6x + 8 = 156/2
7x + 8 = 78
7x = 78 - 8
7x = 70
x = 70/7
x = 10 m  </span>← width
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Answer:

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Step-by-step explanation:

We are given the following in the question:

Initial dimensions of rectangular box:

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\displaystyle\frac{dA}{dt} = \frac{dl}{dt}w + \frac{dw}{dt}l

Putting values, we get,

8 = \dfrac{dl}{dt}(7) + (0.4)(10)\\\\\dfrac{dl}{dt}(7) = 8 -4\\\\\dfrac{dl}{dt} \approx 0.5714

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8 0
3 years ago
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Answer:

Step-by-step explanation:

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