Answer:
117
Step-by-step explanation:
For every 3 zinc there would be 19 copper, and for every 19 copper there would be 3 zinc. There are 741 copper, so there would be 741 * 3 / 19 zinc, which turns out to be 117 zinc.
I think it would be D hope it helps!!!
Sin(t)=12/13 => arcsin(12/13)=t
If you want to put a number as a fraction, just put it over 100.
Eg 82.5 as a fraction is:
82.5
-------
100
