Answer: 2 Dogs
Step-by-step explanation: The other dog never left the park
Answer:
-1
Step-by-step explanation:
2 - 3 = -1
Answer:
perimeter is adding so add all the sides
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let's re-write the equations in order to get the variables as separated in independent terms as possible \:
First equation:

Second equation:

Third equation:

Now let's subtract term by term the reduced equation 3 from the reduced equation 1 in order to eliminate the term that contains "y":

Combine this last expression term by term with the reduced equation 2, and solve for "x" :

Now we use this value for "x" back in equation 1 to solve for "y":

And finally we solve for the third unknown "z":

X+2 is the correct answer