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
The answer is A buddy >:D
Answer:
the answer is 10
Step-by-step explanation:
(8+4+14+16+8)/5
Answer:
Arc length is 12436.8m
Step-by-step explanation:
arc length =
* πD
where M is the angle measure of the arc
and D is the diameter
considering the earth as a circle and half the earth as a semi circle the angle measure of the arc will be = 180 degrees
* π * 7917.5 = 12436.8m
M^2 + n^2
Step 1:
Substitute in the numbers
-5^2 + 3^2
Step 2:
Square both numbers
25 + 9
Step 3:
Add them together
Answer is 34