Question

( Melanie has 230 coins in her collection- Number of European and non-European coins)And now has 180 European coins. Write an equation To determine the number of non-European coins, E, If Melanie has t total coins figure/find the Non-European coins and Identify the constant of proportionality. Pls show work thank you:/

Answer 1

Total number of coins(including European and non European coins) =230

Number of European coins = 180

Let the number of non European coins be = E

T is the total coins or T =230

The equation to determine non European coins is

$E=T-180$

Solving this we get $E=230-180=50$

hence, E = 50

Answer 2

Answer:

The amount of Non-Europeans coins is 50, and the constant of proportionality is approximately 0.217

Step-by-step explanation:

Let T be the total of coins, E be the number of European coins, and nE be the number of non-European coins, then

$T=E+nE$

so, in order to know the amount of non-European coins (nE), we clear nE from the equation

$nE=T-E=230 coins-180coins=50coins$

Finally, the constant C of proportionality is given by the following ratio

$C=\frac{non-European}{Total}=\frac{nE}{T}=\frac{50}{230}\approx0.217$