A school survey found that 7 out of 30 students walk to school. If two students are selected at random without replacement, what is the probability that both students walk to school? HELP

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

Give me the equations of two lines that have the same slope but are not parallel.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?