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DiKsa [7]
2 years ago
12

Replace variables with values and

Mathematics
1 answer:
S_A_V [24]2 years ago
7 0

Answer:

P=a+b+c

=42+17+62

=121

P=42+b+c

P=42+17+c & same as p=59+c

P=42+17+62 & same as p=121

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Answer:

The correct answer will be:

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It is given that :

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5\dfrac{3}{4}\ hrs = \dfrac{5 \times 4+3}{4}\ hrs = \dfrac{23}{4}\ hrs

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Putting the values of temperatures and time:

\dfrac{\dfrac{-31}{2}-0}{\dfrac{23}{4}}\\\Rightarrow \dfrac{\dfrac{-31}{2}}{\dfrac{23}{4}}\\\Rightarrow \dfrac{-31 \times 4}{2 \times 23}} \text{---- Error done by Wen at this step}\\\Rightarrow \dfrac{-31 \times 2}{23}}\\\Rightarrow \dfrac{-62}{23}}

The error done by Wen was during calculating the values of fraction.

So, the correct answer is :\frac{-62}{23}} instead of \frac{-713}{8}

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3 years ago
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Answer:

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please mark as brainliest  if it helped

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