Li Ramirez
05/25/2024 · Middle School
Select all of the equations that are true. \( 16 \div \frac{3}{4}=16 \times \frac{4}{3} \) \( 10 \div \frac{3}{8}=\frac{1}{10} \times \frac{3}{8} \) \( 12 \div 4=12 \times \frac{1}{4} \) \( 15 \div \frac{3}{5}=15 \times \frac{5}{3} \) \( 18 \div \frac{4}{7}=\frac{1}{18} \times \frac{4}{7} \)
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Step-by-step Solution
Let's evaluate each equation one by one to determine which are true.
1. **Equation:** \( 16 \div \frac{3}{4} = 16 \times \frac{4}{3} \)
**Left Side:**
\[
16 \div \frac{3}{4} = 16 \times \frac{4}{3} = \frac{16 \times 4}{3} = \frac{64}{3}
\]
**Right Side:**
\[
16 \times \frac{4}{3} = \frac{16 \times 4}{3} = \frac{64}{3}
\]
**Conclusion:** True.
2. **Equation:** \( 10 \div \frac{3}{8} = \frac{1}{10} \times \frac{3}{8} \)
**Left Side:**
\[
10 \div \frac{3}{8} = 10 \times \frac{8}{3} = \frac{80}{3}
\]
**Right Side:**
\[
\frac{1}{10} \times \frac{3}{8} = \frac{3}{80}
\]
**Conclusion:** False.
3. **Equation:** \( 12 \div 4 = 12 \times \frac{1}{4} \)
**Left Side:**
\[
12 \div 4 = 3
\]
**Right Side:**
\[
12 \times \frac{1}{4} = 3
\]
**Conclusion:** True.
4. **Equation:** \( 15 \div \frac{3}{5} = 15 \times \frac{5}{3} \)
**Left Side:**
\[
15 \div \frac{3}{5} = 15 \times \frac{5}{3} = \frac{15 \times 5}{3} = 25
\]
**Right Side:**
\[
15 \times \frac{5}{3} = \frac{15 \times 5}{3} = 25
\]
**Conclusion:** True.
5. **Equation:** \( 18 \div \frac{4}{7} = \frac{1}{18} \times \frac{4}{7} \)
**Left Side:**
\[
18 \div \frac{4}{7} = 18 \times \frac{7}{4} = \frac{18 \times 7}{4} = \frac{126}{4} = 31.5
\]
**Right Side:**
\[
\frac{1}{18} \times \frac{4}{7} = \frac{4}{126} = \frac{2}{63}
\]
**Conclusion:** False.
**Final Results:**
The true equations are:
- \( 16 \div \frac{3}{4} = 16 \times \frac{4}{3} \)
- \( 12 \div 4 = 12 \times \frac{1}{4} \)
- \( 15 \div \frac{3}{5} = 15 \times \frac{5}{3} \)
Quick Answer
The true equations are:
- \( 16 \div \frac{3}{4} = 16 \times \frac{4}{3} \)
- \( 12 \div 4 = 12 \times \frac{1}{4} \)
- \( 15 \div \frac{3}{5} = 15 \times \frac{5}{3} \)
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