Answer:
.348
Step-by-step explanation:
Multiply the top one by 3 for x, so you can eliminate x and find y
then plug in the y into one of the equations to find x
Answer:

Step-by-step explanation:
Both legs are equal, which implies the triangle is a 45-45-90.
The hypotenuse of this triangle is: 
Answer:
About 39 hours
Step-by-step explanation:
You would do 200/5.15 and get 38.83....
If you round then you get 39.