Simplify in parentheses 5 radical three squared

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?