Answer:
Width = 86 feet
Step-by-step explanation:
Create two equations with the info:
L = 27 + W
where L represents the length and W the width of the backyard.
The other one is about the area of the rectangular backyard:
Area = L x W
where you replace the area with 9718 and the length (L) with (27 + W):
![Area= L\,*\,W\\9718=(W+27)\,W\\9718=W^2+27\,W\\W^2+27\,W-9718=0](https://tex.z-dn.net/?f=Area%3D%20L%5C%2C%2A%5C%2CW%5C%5C9718%3D%28W%2B27%29%5C%2CW%5C%5C9718%3DW%5E2%2B27%5C%2CW%5C%5CW%5E2%2B27%5C%2CW-9718%3D0)
and solve for W using the quadratic equation:
![W=\frac{-27+/-\sqrt{27^2-4(1)(-9718)} }{2\,(1)} \\W=\frac{-27+/-\sqrt{39601}}{2} \\W=\frac{-27+/- 199}{2}](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B-27%2B%2F-%5Csqrt%7B27%5E2-4%281%29%28-9718%29%7D%20%7D%7B2%5C%2C%281%29%7D%20%5C%5CW%3D%5Cfrac%7B-27%2B%2F-%5Csqrt%7B39601%7D%7D%7B2%7D%20%5C%5CW%3D%5Cfrac%7B-27%2B%2F-%20199%7D%7B2%7D)
This gives us two solutions:
W = - 113
and W = 86
We use the positive solution since this is a distance.
Therefore the width is: 86 feet
Answer: In terms of percent, the salinity of most sea water is between 2.5 and 4.5
Step-by-step explanation:
The sign will be Positive because there are two negatives
I am sorry but i cant see the picher to help you:C
Answer: 1,000,000,000*10
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