Question

Ariana has $1.40 worth of nickels and dimes. She has twice as many nickels as dimes. Determine the number of nickels and the number of dimes that Ariana has.

Answer 1

Answer:

The three-dimensional structure of a double-stranded DNA molecule may be described by distinguishing the helical turns of the DNA duplex from any superhelical turns that might be superimposed upon the duplex turns. ... These results are interpreted as showing that human DNA is supercoiled.