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SIZIF [17.4K]
3 years ago
12

A plot of land is in the shape of a triangle. If one side is x meters, a second side (5x−3) meters, and a third side is ​( 7x −

6 ​) ​meters, express the perimeter of the lot as a simplified expression in x.
Mathematics
1 answer:
liubo4ka [24]3 years ago
3 0

Given, the plot is in the shape of triangle.

First side = x meter

Second side = ( 5x-3 )meters

Third side = ( 7x-6 ) meters

Perimeter of triangle is equal to the sum of all the three sides.

Perimeter = x + (5x-3) + (7x-6)

Combine like terms by adding all the x terms together and all the constant terms together.

Perimeter = (x+5x+7x) + ( -3 -6 )

Perimeter = 13x - 9 feet ... Answer


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4 0
3 years ago
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Does Anyone know this?
lukranit [14]

Answer:

∠AEC = 139°

Step-by-step explanation:

Since EC bisects ∠BED then ∠BEC = ∠CED = 4x + 1

∠AED = ∠AEB + ∠BEC + ∠CED = 180 ← straight angle

Substitute values into the equation

11x - 12 + 4x + 1 + 4x + 1 = 180, that is

19x - 10 = 180 ( add 10 to both sides )

19x = 190 ( divide both sides by 19 )

x = 10

Hence

∠AEC = ∠AEB + ∠BEC = 11x - 12 + 4x + 1 = 15x - 11, hence

∠AEC = (15 × 10) - 11 = 150 - 11 = 139°

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the answer is A because it shows.
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
What's the hypothesis of a triangle ?
Mariana [72]
It is the slant side of the triangle its the longest side or in other words it forms a 90 degree angle the side thats going from top to bottom is you hypotenuse

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