Q: Sunrise is at 7:30 am, and sunset is at 9:15 pm. How long is it from: a) 7:30 am until 7:30pm
b) 7:30pm until 9:15 pm
c) Sunrise until sunset?

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Which of the following is the correct ratio for converting kilograms to grams

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)