Answer:
dont understand clearly
Step-by-step explanation:
dont understand clearly
Answer:
The area of the net is not π • 9^2
:P no explanation for u
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:
For me the answer is
The ratio for the percent increase has a smaller denominator than the percent decrease.
Step-by-step explanation:
From 45 to 75, the increase is 30
If we check the % increased, (30/45)*100 = 66.667%
If we decrease the price from 75 to 45, the amount is same, i.e. 30 but the denominator is changed.
(30/75)*100 = 40%
Answer:
C:25
Step-by-step explanation:
Hopefully this helps!