Answer:
n = 185/9
Step-by-step explanation:
(6n-25) + (3n + 20) = 180
Combine like terms
9n -5 = 180
Add 5 to each side
9n - 5 +5 = 180+5
9n = 185
Divide each side by 9
9n/9 = 185/9
n = 185/9
There both have even numbers being add to them
Answer:
4
Step-by-step explanation:
at x=3
since x=3 means x>= 1
use x+1 = 3+1=4
Answer:
The measure of the shortest side is 851 miles
Step-by-step explanation:
Let
x ----> the measure of the shortest side
y ---> the measure of the middle side
z ---> the measure of the longest side
we know that
The perimeter of triangle is equal to
![P=x+y+z](https://tex.z-dn.net/?f=P%3Dx%2By%2Bz)
![P=3,067\ mi](https://tex.z-dn.net/?f=P%3D3%2C067%5C%20mi)
so
----> equation A
the shortest side measures 71 mi less than the middle side
so
----> equation B
the longest side measures 372 mi more the the middle side
so
----> equation C
substitute equation B and equation C in equation A
![3,067=(y-71)+y+(y+372)](https://tex.z-dn.net/?f=3%2C067%3D%28y-71%29%2By%2B%28y%2B372%29)
solve for y
![3,067=3y+301\\3y=2,766\\y=922](https://tex.z-dn.net/?f=3%2C067%3D3y%2B301%5C%5C3y%3D2%2C766%5C%5Cy%3D922)
Find the value of x
![x=y-71\\x=922-71\\x=851](https://tex.z-dn.net/?f=x%3Dy-71%5C%5Cx%3D922-71%5C%5Cx%3D851)
therefore
The measure of the shortest side is 851 miles