The system of linear equations can be used to find the number of nickels, n, and the number of quarters, q, yolanda used is n + q = 28
n + q = 280.05n + 0.25q = 4
<h3>Simultaneous equation</h3>
n + q = 28
0.05n + 0.25q = 4
n = 28 - q
0.05n + 0.25q = 4
0.05(28 - q) + 0.25q = 4
1.4 - 0.05q + 0.25q = 4
- 0.05q + 0.25q = 4 - 1.4
0.20q = 2.6
q = 2.6 / 0.20
q = 13
Substitute into
n + q = 28
n + 13 = 28
n = 28 - 13
n = 15
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Answer: Deena is correct
Step-by-step explanation:
Deena is correct because the number doesn't terminate nor does it repeat. If it does not repeat or terminate it means it is irrational.
The original messy expression:
2x + 3 + 5x + 6
Add up all the x's: 2x + 5x = 7x
Add up all the plain numbers: 3 + 6 = 9
Re-write the expression: 7x + 9
Answer:
50
Step-by-step explanation:
Answer:
Number of Unlimited passes sold were 168.
Step-by-step explanation:
Let Number of Unlimited passes sold be x
and Number of entrance-only passes sold be y.
Total number of passes sold =282
Hence,
Also
Cost for unlimited-ride pass = $50
Cost for entrance-only pass = $20
Total Money for one day = $10,680
Hence,
Dividing by 10 on both side we get;
Now multiplying equation 1 by 2 we get;
Now Subtracting equation 3 from equation 2 we get;
x= 168
x+y = 282
168+y =282
y=282-168
y= 114
Hence, Number of Unlimited passes sold are 168 and Number of entrance-only pass sold is 114.