At 4pm, shawn leaves his house and drives to the park. he gets to the park at 5pm. his brother sam leaves their house at the same time and drives to the beach, 30 miles past the park in the same direction. sam got to the beach at 5: 30pm. if both shawn and sam drove the same speed for the entire trip, what was their speed in miles per hour?

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

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?