HELP , which of the following is not an equation

Somone me i want to know what 18 hours out of 24 hours in a fraction

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

Select all the correct locations on the table. consider the following expression. 76.493 select "equivalent" or "not equivalent" to indicate whether the expression above is equivalent or not equivalent to the values or expressions in the last column equivalent not equivalent 343 equivalent not equivalent 49 78.498 78.498 75.493 equivalent not equivalent 75.7 equivalent not equivalent