Question

A. The table shows the number of kilograms of water \( k \) in a human body and its total weight iW. \begin{tabular}{|c|c|c|c|c|c|} \hline \( \boldsymbol{k} \) & 20 & 30 & 40 & 50 & 60 \\ \hline WV & 30 & 45 & 60 & 75 & 90 \\ \hline \end{tabular} 1. Show that \( k \) and \( W \) are in direct proportion. 2. Draw the graph of \( k \) against \( W \). 5. Doscribo the graph. 4. Find the equation rolating \( k \) and \( W \). 5. If Sam weighs 72 kg , how many kllograms of water does his body hove?

          A. The table shows the number of kilograms of water \( k \) in a human body and its total weight iW.
\begin{tabular}{|c|c|c|c|c|c|}
\hline \( \boldsymbol{k} \) & 20 & 30 & 40 & 50 & 60 \\
\hline WV & 30 & 45 & 60 & 75 & 90 \\
\hline
\end{tabular}
1. Show that \( k \) and \( W \) are in direct proportion.
2. Draw the graph of \( k \) against \( W \).
5. Doscribo the graph.
4. Find the equation rolating \( k \) and \( W \).
5. If Sam weighs 72 kg , how many kllograms of water does his body hove?

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A. The table shows the number of kilograms of water k in a human body and its total weight iW.

k 20 30 40 50 60

WV 30 45 60 75 90

1. Show that k and W are in direct proportion.
2. Draw the graph of k against W.
5. Doscribo the graph.
4. Find the equation rolating k and W.
5. If Sam weighs 72 kg , how many kllograms of water does his body hove?

Added by William S.

Elementary and Intermediate Algebra

Marvin L. Bittinger, David J.… 4th Edition

Chapter 7

Instant Answer

Solved by Expert Steven Clarke

10/16/2022

Step 1

To show direct proportion, the ratio \( \frac{W}{k} \) should be constant for all values. \[ \frac{W}{k} = \frac{30}{20} = 1.5, \quad \frac{45}{30} = 1.5, \quad \frac{60}{40} = 1.5, \quad \frac{75}{50} = 1.5, \quad \frac{90}{60} = 1.5 \] Since the ratio is Show more…

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A. The table shows the number of kilograms of water \( k \) in a human body and its total weight iW. \begin{tabular}{|c|c|c|c|c|c|} \hline \( \boldsymbol{k} \) & 20 & 30 & 40 & 50 & 60 \\ \hline WV & 30 & 45 & 60 & 75 & 90 \\ \hline \end{tabular} 1. Show that \( k \) and \( W \) are in direct proportion. 2. Draw the graph of \( k \) against \( W \). 5. Doscribo the graph. 4. Find the equation rolating \( k \) and \( W \). 5. If Sam weighs 72 kg , how many kllograms of water does his body hove?

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