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Naily [24]
3 years ago
15

The perimeter of a triangle is 65 meters. The second side is 5 meters less than the first side The third side is 7

Mathematics
2 answers:
Tom [10]3 years ago
8 0

Answer:

First side (x)=21m

Second side=x-5=21-5=16m

Third side= x+7=21+7=28m

Step-by-step explanation:

Perimeter of the triangle= Sum of all the three sides

Let the First side be 'x'

Then, Second side =x-5

Third side= x+7

Perimeter=65 m

Perimeter of the triangle= First side + Second side + Third side

      65=x+(x-5)+(x+7)\\\\65=x+x+x-5+7\\\\65=3x+2\\\\3x=65-2\\\\3x=63\\\\x=63/3\\\\x=21 m\\\\

First side (x)=21m

Second side=x-5=21-5=16m

Third side= x+7=21+7=28m

notsponge [240]3 years ago
6 0

Answer:

x=21

y=16

z=28

Step-by-step explanation:

Let

The first side=x

The second side =y

The third side=z

The rest is in the attached file

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