CONNECTING CONCEPTS Point S is between points R and I on RT. Use the information to write an equation in terms of .x. Then solve the equation, and find RS, ST and RT. a. RS=2x+10, ST=x-4, RT=21 Equation: r = RS=ST= b. RS -9, ST=19, RT=&- 14 Equation: r = RS= ST= RT= 6) CONNECTING CONCEPTS In the diagram, AB BC, AC CD, and AD = 12. Find the lengths of all segments in the diagram. D C B A AB= BC BD = AC=