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Charra [1.4K]
2 years ago
5

The perimeter of a trapezoid is 39a-7. Three sides have the following lengths : 9a, 5a + 1 and 17a -6

Mathematics
1 answer:
Assoli18 [71]2 years ago
4 0

The length of fourth side is: 8a-2

Step-by-step explanation:

Given

Perimeter = P = 39a-7

Side1 = s_1 =9a\\Side2=s_2=5a+1\\Side3=s_3=17a-6\\Side4=?

The perimeter is given by:

P = s_1+s_2+s_3+s_4\\39a-7 =9a+5a+1+17a-6+s_4\\39a-7=31a-5+s_4\\s_4=39a-31a-7+5\\s_4=8a-2

The length of fourth side is: 8a-2

Keywords: Perimeter, trapezoid

Learn more about perimeter at:

  • brainly.com/question/725998
  • brainly.com/question/7128279

#LearnwithBrainly

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Answer:

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Step-by-step explanation:

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Think of this in terms of how many "units" can the total paper be cut into. Easiest way to keep track of units is by their area. In other words, take the total area and see how many unit areas fit into it:

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Step-by-step explanation:

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(<em>You</em><em> </em><em>can</em><em> </em><em>try</em><em> </em><em>dividing</em><em> </em><em>'</em><em>3</em><em>'</em><em> </em><em>by</em><em> </em><em>the</em><em> </em><em>other</em><em> </em><em>numbers</em><em> </em><em>to</em><em> </em><em>also</em><em> </em><em>check</em><em> </em><em>your</em><em> </em><em>answer</em>)

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