I need help with add a conference for 500 people 20% of the participants or French 50% or American 5% are Germany and are of other nationalities how many French participants are at the conference pls help it’s due today

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.