In a certain country ,800 pennies have the value of 100 ducates and 100 pennies have the value of 250 tolars. how many ducates have the same value of 100 tolars? (work out and explain)

There are several unique characteristics of qualitative research that make it distinct from quantitative research. describe the aspects of qualitative research and the elements of design that contribute to the rigor of the work. what actions of the researcher can compromise the integrity of the findings?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2