Which of the following are techniques you have learned so far for solving a quadratic equation?

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning