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2 years ago

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( Melanie has 230 coins in her collection- Number of European and non-European coins)And now has 180 European coins. Write an eq

uation 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:/

2 answers:

katovenus [111]2 years ago

8 0

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

Leokris [45]2 years ago

4 0

Answer:

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

Step-by-step explanation:

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

$T=E+nE$

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

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

Finally, <em>the constant C of proportionality</em> is given by the following ratio

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

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$L_2 = \int_ {1}^{2}1 \cdot y(0) + {1}^{2} \cdot \: {y}^{3} dy$

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$L_3 = \int_ {(1,2)}^{(0,0)} xydx + {x}^{2} {y}^{3} dy$

The equation of this line is

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