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Pavlova-9 [17]
3 years ago
15

In ΔIJK, the measure of ∠K=90°, the measure of ∠I=38°, and JK = 7.4 feet. Find the length of KI to the nearest tenth of a foot.

Mathematics
1 answer:
dem82 [27]3 years ago
3 0

Answer:

9.5

Step-by-step explanation:

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Round these numbers to the nearest ten and 100 for brainlies 50 points
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7) Benny had 351 dollars to spend on 9 books. After
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8 0
3 years ago
In 1975 1000 tons of coal was manufactured. It is 10% greater in 1976 and 5% less in 77. What is the final about of coal in 1977
Digiron [165]
In 1975 it was 1000tons, ok, well, in 1976 it went up by 10%, how much is a 10% increase?

\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1000&100\\
x&100+10
\end{array}\implies \cfrac{1000}{x}=\cfrac{100}{100+10}\implies \cfrac{1000\cdot 110}{100}=x
\\\\\\
1100=x

well, in 1976 it was 1100 tons then, and in 1977 it went down by 5% of 1100, well, if we take 1100 to be the 100%, then what is a 5% decrease?

\bf \begin{array}{ccllll}
coal&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1100&100\\
x&100-5
\end{array}\implies \cfrac{1100}{x}=\cfrac{100}{100-5}\implies \cfrac{1100\cdot 95}{100}=x
5 0
3 years ago
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