Quotient of 1+i/3+4i?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Find the distance between c and d on the number line c=3 and d=11