Cummings Valdez
11/18/2023 · Senior High School
3. Irrigation System (Rational Algebraic Expressions): - The garden will require an irrigation system that costs \( \$ 10 \) per meter of piping. The length of piping needed can be modeled by the expression \( \frac{2 l+2 w}{2} \), where \( l \) and \( w \) are the length and width of one plot, respectively. - If each plot is 4 meters by 6 meters, calculate the total cost of the piping for the entire garden using rational algebraic expressions.
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To calculate the total cost of the piping for the entire garden, we first need to determine the length of piping required for one plot using the given expression \( \frac{2l + 2w}{2} \).
1. **Calculate the length of piping for one plot:**
- Given dimensions of one plot: \( l = 4 \) meters and \( w = 6 \) meters.
- Substitute \( l \) and \( w \) into the expression:
\[
\text{Length of piping} = \frac{2(4) + 2(6)}{2}
\]
- Calculate:
\[
= \frac{8 + 12}{2} = \frac{20}{2} = 10 \text{ meters}
\]
2. **Determine the total number of plots:**
- Let's assume the garden consists of \( n \) plots. (The problem does not specify the number of plots, so we will keep it as \( n \) for now.)
3. **Calculate the total length of piping for all plots:**
- Total length of piping for \( n \) plots:
\[
\text{Total length} = 10n \text{ meters}
\]
4. **Calculate the total cost of the piping:**
- The cost per meter of piping is \( \$10 \).
- Therefore, the total cost \( C \) for the piping is:
\[
C = 10 \text{ (cost per meter)} \times 10n \text{ (total meters)}
\]
- Simplifying this gives:
\[
C = 100n \text{ dollars}
\]
5. **Final expression for total cost:**
- The total cost of the piping for the entire garden, in terms of the number of plots \( n \), is:
\[
C = 100n
\]
To find the specific total cost, you would need to know the number of plots \( n \) in the garden. If you provide that number, I can calculate the exact total cost.
Quick Answer
The total cost of the piping for the entire garden is \( 100n \) dollars, where \( n \) is the number of plots.
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