An item is regularly priced at $77. Yasmin bought it at a discount of 15% off the regular price.

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.

Ef is a median of trapezoid abcd. the length of ab is 12, and the length of cd is 18. the length of bf is 4. what is the length of fc?