I need help, I have a test tomorrow and I didn't understand this exercise
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Answer:
The equation that describes the relationship between the number of dimes and the number of nickels in Priya's pocket. is;
Explanation:
Let n and d represent the number of nickels and dimes in her pocket;
We know that;
1 nickel is 5 cents = 0.05 dollar
1 dime is 10 cents = 0.10 dollar
Also;
n nickels = n times 0.05 dollars
d dimes = d times 0.10 dollar
The total is given as;
the total amount is $1.25.
So, we have the equation as;
Therefore, the equation that describes the relationship between the number of dimes and the number of nickels in Priya's pocket. is;
<h3><u>Question</u></h3>
The amount of money that Charlie saves each week is directly proportional to the amount he earns. Last week Charlie saved $32 on his earnings of $512. At the same rate, how much will Charlie save this week on his earnings of $448?
<h3><u>Answer:</u></h3>Charlie saved $ 28
<h3><u>Solution:</u></h3>Given that amount of money that Charlie saves each week is directly proportional to the amount he earns
Let y represent of saved money and x represent amount of earned money
Therefore,
y = kx --- eqn 1
Where "k" is the constant of proportionality
<em><u>Last week Charlie saved $32 on his earnings of $512</u></em>
y = 32 and x = 512
Substituting in eqn 1, we get
To find amount of saved money, we will substitute k = 0.0625 and x = 448 in eqn 1
y = 0.0625(448) = 28
Thus charlie saved $ 28