A $900 couch is marked up 20%. (increase) what is the new price of the couch​

What is the slope of the line shown below?

How do you find the distance of each number from the mean

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.