Pregunta
4. If \( x \) represents \( 2.8 \% \) of 270 , then which of the following equation would not result in the correct value for (1) \( \frac{x}{270}=\frac{2.8}{100} \) (3) \( x=(0.028)(270) \) (2) \( x=\frac{2.8}{100} \cdot 270 \) (4) \( x=(0.28)(270) \) N-Gen Math* Aucebra I-Unti 6-Exponenthal Aucesan and Fusctions-Lisson 8 eMATHinstruction, RED Hook, NY 12571, O 2022
Ask by Harris Bryant. in the United States
Jan 22,2025
Solución de tutoría real
Respuesta verificada por el tutor
Responder
The equation \( x = (0.28)(270) \) does not result in the correct value for \( x \).
Solución
To determine which equation does not result in the correct value for \( x \), we first need to calculate \( x \) as \( 2.8\% \) of \( 270 \).
### Step 1: Calculate \( x \)
The percentage can be converted to a decimal by dividing by \( 100 \):
\[
0.028 = \frac{2.8}{100}
\]
Now, we can calculate \( x \):
\[
x = 0.028 \times 270
\]
### Step 2: Evaluate Each Equation
1. **Equation (1)**:
\[
\frac{x}{270} = \frac{2.8}{100}
\]
This equation is equivalent to \( x = 270 \times \frac{2.8}{100} \), which is correct.
2. **Equation (2)**:
\[
x = \frac{2.8}{100} \cdot 270
\]
This is the same as the previous equation and is correct.
3. **Equation (3)**:
\[
x = (0.028)(270)
\]
This is also correct as it directly calculates \( x \).
4. **Equation (4)**:
\[
x = (0.28)(270)
\]
This equation is incorrect because \( 0.28 \) is not the correct decimal representation of \( 2.8\% \). The correct decimal is \( 0.028 \).
### Conclusion
The equation that does not result in the correct value for \( x \) is:
\[
\text{(4) } x = (0.28)(270)
\]
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Extra Insights
To solve for \( x \), which represents \( 2.8\% \) of 270, we need to correctly apply the percentage formula. Among the options provided, the equation \( x=(0.28)(270) \) will not yield the correct value because \( 0.28 \) is not representative of \( 2.8\% \); it actually represents \( 28\% \). For \( 2.8\% \), we convert it to decimal form correctly as \( 0.028 \). Therefore, the other equations correctly represent the calculation for \( x \).
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