On average, which country user's spend the most time on social media? Which country's users spend the least time?

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Jorge planted flowers in his garden he planted one row of 12 tulips and one row of 36 daisies george's friend kylie has a garden with 75 flowers in it kylie's garden only contains tulips and daisies. is it possible for kylie‘s garden she have the same ratio of tulips to daisies as george's garden?

What is the difference between regular convex and concave polygons