The perimeter of a triangle is the sum of all side lengths of the triangle. The numerical expression for the perimeter of Stephanie's triangle is: 
Let the sides of Juan's triangle be x, y and z. So:

The perimeter (J) of Juan's triangle is calculated by adding all sides.
So:

This gives:


From the question, we understand that:
The perimeter (S) of Stephanie's triangle is half that of Juan.
This means that:

Substitute 25 for J

Hence, the numerical expression for the perimeter of Stephanie's triangle is: 
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brainly.com/question/11957651
658-216=442
There should be 442 yards of wrapping paper left on the roll.
Answer:
2x^2-2x+9
Step-by-step explanation:
Answer:
tangents, arcs, and chords
Step-by-step explanation: