The world population was 4.2 billion people in 1982. the population in 1999 reached 6 billion find the percent of change from 1982 to 1999

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee