ABCD is a parallelogram. If AB= 3x -7 and CD = 5x - 19, find x.

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

Find the interior angle of a regular polygon which has 6 sides