Answer:
Hi there!
If W= A/4, then A= 4W
Step-by-step explanation:
because if you times 4 on both sides of the equation : w*4 = (A/4) *4
you get A= 4W
So,
To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

75%
75% of the metal in the coin is copper.
Answer: 1. C 2.B 3.C
Step-by-step explanation:
Answer:
The metric prefixes value 1.048576E-14 E (exa) in words is "one point zero four eight five seven six one four E (exa)".
Step-by-step explanation:
-5 ^ -20 = 1.048576E - 14
negative five to the power of negative twenty equals one decimal point zero four eight five seven sixE subtract fourteen.