Answer:
x=3
PR=10
Step-by-step explanation:
This is an isosceles triangle, indicated by the black markers on angles P and Q. This also means that sides PR and QR are equal.
That in mind, to solve for x set the two expressions equal to each other and solve for x.
3x+1=5x-5 (subtract 1 from the left side and 5 from the right. Do the same from both sides)
-2x = -6 (divide by -2)
X=3
To find the measurement for PR, simply plug in the value for x into the equation for PR
3(3) +1
9+1 =10
