-7=z/2+1
What you first need to do is to multiply both sides of the equation by 2
-14=z+2
Now you move the variable to the left side and change within it’s own sign
-z-14=2
Into
-z=2+14
Now you then add the numbers
-z=16
The last part you do is change the sign on both sides in this equation
z=-16
Therefore, z=-16 is your answer in number 16.
The answer to the question above is the third choice, "a shelf on a wall". The shelf is usually made of rectangular pieces of materials that are then connected to each other to form quadrilaterals. The sides of the shelf are planes.
Answer:
I'm lost I messed up how do I delete my answer...
A ) P=6n+18 where N is the number of triangles. There's always two '9's and the 6 is based on how many triangles there are.
Answer:

Step-by-step explanation:
Given
See attachment
Required
The solution
The solution is at the point where the two lines meet.
The lines meet at:
and 
So, the solution is:
