Answer:
4/12 simplified to 1/3 of rolling 2 times.
Step-by-step explanation:
9 million and 9 hundred thousand
9,000,000
and 900,000
Answer:
r = 49
Step-by-step explanation:
686 = 14r
686/14= 49
r = 49
$8.25
The first 5 checks are free so you can subtract the 5 from 18 which is 13. Then you multiply 13 & .25 which is equal to $3.25 and then you just add the $5
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.