1. 9
2. 3 (This problem is explained on brainly here:
brainly.com/question/485726)
3. Triangle because a lateral face is any face that is not a base.
4. 2:15. You first add three hours, then, 1/4 of an hour is 15 minutes. You multiply 15*3 because you're trying to find 3/4 of an hour. Then you have to add that to the current 30 minutes.
5. I can't see it, sorry. :(
6. 8. First, you have to find out how many inches are in 50 feet (50*12). Then, you divide that number by 75 to figure out how many rotations.
