Answer:

Step-by-step explanation:
Given


Required
Determine the total size of the string
To do this, we multiply the number of pieces by the length of each piece.




Convert to mixed number

Answer: 5/1
Step-by-step explanation:
After 5 hours, it would be at zero. And 100 divided by 4, is 20. Meaning that the slope is 5/1, or 5.
Hello! The value of x+y is 12
Make sure to read an explanation so you can understand the solution better.
Any questions about the answer and explanation can be asked through comments.
Step-by-step explanation:
We can simply solve the system of equations by substituting x = 3y in the first equation

Therefore, the value of y is 3. Then we substitute the value of y in x = 3y.

Therefore, the value of x is 9.
Since you want to find x+y, simply add 9 and 3 as we get 12.
Therefore x+y = 12.
I DONT SPEAK ENGLISH, I'M BRAZILLIAN