If LM = 6, what is the perimeter of △PKQ?

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Somone me i want to know what 18 hours out of 24 hours in a fraction

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10