What is 0.78 reapeating as a simplified fraction

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels