There are four numbers of 3-coin combinations if we can choose from nickels, dimes, quarters, and half-dollars.
<h3>How to solve probability combinations?</h3>
The coins to select from are nickels, dimes, quarters, and half-dollars;
Thus;
Coins (n) = 4
The number of coin to select is:
Coin (r) = 3
The coin combination is then calculated using:
Combination = ⁴C₃
Apply the combination formula, we have;
Combination = 4
Thus, there are four number 3-coin combinations if we can choose from nickels, dimes, quarters, and half-dollars.
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Answer:
Step-by-step explanation:
Given:
Two equations are given.
------(1)
----------(2)
Solve equation 1 for y.
-----------(3)
Now, we substitute y value in equation 2.
Now, we substitute x value in equation 1.
Therefore, the value of x and y is 
Answer:
it is letter B and then it is letter a
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