Shea and Chris drive to work. Shea drives 30 miles in 1.25 hours.
Chris drives 62 km in 1 hour 15 min.
Work out the difference between their average speeds in km/h.
1 mile = 1.6 km

Write 17/20 as a decimal and as a percent.

Bring the fraction a/a-4 to a denominator of 16-a^2

The constitution gives congress the power to create federal courts lower than the supreme court higher than the supreme court equal to the supreme court, unaffected by the supreme court.