Solve the equation algebraically. x^2-7x-1/7=0

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

Analyze the diagram below and complete the instructions that follow. how to find tan