2.11 reasoning and proof part 2 HELP PLS

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

If the car had not hit the fence, how much farther would it have skidded? solve the skid-distance formula to find the extra distance that the car would have traveled if it had not hit the fence. round your answer to two decimal places. note that unit conversion is built into the skid distance formula, so no unit conversions are needed.