PLEAS EHELP ILL GIVE BRAINLIEST
NO BRAINLIEST IF YOU DONT SHOW WORK

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.

If the average of x, y and z is 15 what is their sum