Add up all the like terms and equal it to 720. Solve, the answer you get is x. Next subtract (x-20) and that's the answer.
Answer: Y=4x+-10
Step-by-step explanation:
Plug in both coordinates, it works
You can make a mathmatical tree
The answer is 5/16 because in total there are 16 possibilities when tossing a coin 4 times.