math questions

[blueskye]

1. The problem statement, all variables and given/known data

i have questions attached here,help me solve , thx

2. Relevant equations



3. The attempt at a solution

[Pranav-Arora]

Sorry, the board don't function like this.
You need to show your attempts before asking for any help. :smile:

[HallsofIvy]

A number of problems posted with no work shown- thread closed.