Final answer:
The value of y is 8.
Step-by-step explanation:
To find the value of y, we can set up an equation using the given information. We know that RS = 6y + 4, ST = 3y + 6, and RT = 82. Since RS + ST = RT, we can substitute the values into the equation:
6y + 4 + 3y + 6 = 82
Combining like terms:
9y + 10 = 82
Subtracting 10 from both sides:
9y = 72
Dividing both sides by 9:
y = 8
Therefore, the value of y is 8.