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Ksju [112]
2 years ago
9

The price of a notebook has risen to $3.90 today, Yesterday's price was $3.40. Find the percentage increase. Round the answer to

the nearest tenth of a percent
Mathematics
1 answer:
andrew-mc [135]2 years ago
4 0
It went up 1.15 percent.
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21.) A rectangle has an area of 36 square units. As the length and width change, what do you know about their
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Answer:

the length and the width are inversely proportional to each other (l=\frac{36}{w} or w=\frac{36}{l})

Step-by-step explanation:

Let

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Complete the table with some values of l and w that fit the previous formula:

\begin{array}{ccc}\text{Length}&\text{Width}&\text{Area}\\ \\36&1&36\cdot 1=36\ un^2.\\18&2&18\cdot 2=36 \ un^2.\\12&3&12\cdot 3=36\ un^2.\\ 9&4&9\cdot 4=36\ un^2.\\l&w&l\cdot w=36 \ un^2.\end{array}

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