9. Bob is sitting at a stoplight when he realizes he is late for a meeting. When the light turns green, Bob presses the accelerator and is soon moving at 44 km/h * r . If his acceleration is 5 km/h * r / h * r , how long will it take for the car to go from 0 to 44 km/h * r ?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)