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gogolik [260]
3 years ago
10

The perimeter of a scalene triangle is 14.5cm. The longest side is twice that of the shortest side. Which equation can be used t

o find the side lengths if the longest side measures 6.2cm
Mathematics
1 answer:
Lemur [1.5K]3 years ago
4 0

Answer:

See basic equations.

Step-by-step explanation:

Let x = the shortest side

Let 2x = the longest side.

Let y = the medium sized side.

Basic Equation

y + x + 2x = 14.5

or

y + 3x = 14.5

Comment

This almost looks like it needs more information because you are not entirely certain what you are looking for. You have not asked for a complete solution. About all you can do is solve for x and y and see if you really do have a triangle.

y + x + 2x + 14.5

2x = 6.2        Given. Divide by 2

x =  6.2/2 = 3.1

x + 2x + y = 14.5         Substitute values

3.1 + 6.2 + y = 14.5     Combine like terms

9.3 + y = 14.6              Subtract 9.3 from both sides

y = 14.6 - 9.3               Combine

y = 5.3  

Yes you do have a triangle. any 2 sides is larger than the 3rd.

I don't know what to put as the answer however.

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