Can somebody pls help with this have to find the inverse and show the steps so i can understand the process

What is the measure of ac? 5 units 13 units 26 units 39 units

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

What is 32+4 x (16 x 1/2) -2 show your work}