Justify the last two steps of the proof. given rs=ut and rt=us

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

For the sat there is a reading test, math test, and a writing and language test. the act has social studies and science tests.

answer:

is this serious

explanation: