A rectangle with a length of x - 4 and a width of 8 has a perimeter of 34.
What is the value of x?

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Asked 8/26/2013 1:04:37 PM

Updated 5/25/2014 11:24:05 PM

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Question

Asked 8/26/2013 1:04:37 PM

Updated 5/25/2014 11:24:05 PM

4 Answers/Comments

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A rectangle with a length of x - 4 and a width of 8 has a perimeter of 34. Then 2(x - 4) + 2(8) = 34

2x - 8 + 16 = 34

2x + 8 = 34

2x = 34 - 8 = 26

x = 13

2x - 8 + 16 = 34

2x + 8 = 34

2x = 34 - 8 = 26

x = 13

Added 5/25/2014 11:20:58 PM

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Confirmed by andrewpallarca [5/25/2014 11:31:26 PM]

3

The slope of a line that runs parallel to y = 2x + 5 is 2.

Added 5/25/2014 11:22:10 PM

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2x^2 + 7x - 4x - 6x^2 = -4x^2 + 3x

Added 5/25/2014 11:22:41 PM

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Confirmed by andrewpallarca [5/25/2014 11:32:14 PM]

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Exponential Decay is A model for decay of a quantity for which the rate of decay is directly proportional to the amount present.

Added 5/25/2014 11:24:05 PM

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Confirmed by andrewpallarca [5/25/2014 11:32:18 PM]

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