Answer: 6 units
Explanation:
Since R is the midpoint of QS, this means that QR (2x) and RS (x + 3) are congruent. We can create an equation to help us solve.
Given:
2x = x + 3
Subtract x from both sides:
x = 3
Now that we know what x is equal to, we can substitute this back into the expression and solve for the length of QR.
Given:
QR = 2x + x + 3
Subsiuste:
QR = 2(3)
Simplify:
QR = 6 units