The ratio of one side of the triangle abc to the corresponding side to a similar triangle def is 5: 8. the perimeter of triangle def is 96 inches. what's the perimeter of triangle abc

Which of these choices show a pair of equivalent expressions?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?