Answer: 2.6
Step-by-step explanation:
PQ = QR (because it’s a rhombus), so
9b - 5 = 3b - 0.8
b = 0.7
And RS = PQ (again because rhombus), so RS = 9b - 5 = 1.3. Since RT is twice RS, we have
RT = 2(1.3) = 2.6.
-6 times 8 or -8 times 6. These are just a few. :)