Four tough algebra questions, changing subject of formula...?

Science & Mathematics by Anonymous 2018-09-18 22:04:28

Social Science

No response

Hello, I need some help with these four questions regarding changing the subject of a formula. They are the last four in my practice test, but I get stuck seeing how they are worked out. I'd be grateful if someone could show me the workings out for each. Thanks. 1) Make d the subject: s = n/2{2a + (n -...