He walked 4.2 miles each hour. Because 12 divided by three is 4 and 6 divided by 3 is 2. :D
Answer:
A horizontal line with infinitely many x coordinates, the y coordinate being 3 at all times.
Step-by-step explanation:
Answer:
Step-by-step explanation:

Answer:

Step-by-step explanation:
We know that since angles in a triangle add up to 180º, the remaining angle must be 45º.
So the side with length
must be equal to the side with length
. That is:

Now, by Pythagoras:
