Answer:
42.2
Step-by-step explanation:
all you have to do is add up the number just how they are
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: 
Read more about perimeters at:
brainly.com/question/11957651
Answer:
16-5x
Step-by-step explanation:
Answer:
23
Step-by-step explanation:
plug and chug: 5(4)+3=20+3=23
Answer:
help
Step-by-step explanation: