What is six and four fifths plus seven and four fifths

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Thomas is using a drawing program to complete a construction. which construction could he be completing? two perpendicular lines are drawn. inscribing an equilateral triangle in a circle inscribing a square in a circle inscribing a regular pentagon in a circle inscribing a regular hexagon in a circle