The average distance from Earth to Mars is about 225 million kilometers. A signal travelling at the speed of light (about 300000 km/s) would take how long to travel between the two planets?
Show every step of your answer.

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Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list

How can (square root of 25) ^2 be rewritten?