Step-by-step explanation:
16 book marks has been sold
Answer:
\sqrt(3)[cos((4\pi )/(45))+isin((4\pi )/(45))]
The first one.
I think option no B
hope it will help you
140
so where trying to find the unknown total of coins so where gonna call that x
then we will make an equation 5% * x= 7
then to make it easier to solve we will convert 5% to a decimal .05
and finally to find the answer we will divide both sides by .05
this gives us x= 140 which is the answer
