Which step is wrong in the problem below ?

Mathematics

2 answers:

Vesnalui [34]3 years ago

6 0

Step 2 they added instead of multiplied

wel3 years ago

4 0

Answer:

step 2

Step-by-step explanation:

because when we have multiplication and addition together we shd take multiplication sign first.

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irakobra [83]

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$\bf \stackrel{mixed}{1\frac{1}{4}}\implies \cfrac{1\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{5}{4}}
\\\\\\
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$\bf \begin{array}{ccll}
feet&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
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\end{array}\implies \cfrac{\quad \frac{5}{4}\quad }{\frac{7}{2}}=\cfrac{1}{h}\implies \cfrac{5}{4}\cdot \cfrac{2}{7}=\cfrac{1}{h}\implies \cfrac{5}{2}\cdot \cfrac{1}{7}=\cfrac{1}{h}
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