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Eddi Din [679]
4 years ago
14

Marco walked 27/100 kilometers to the park. Then he walked 3/10 kilometers to the library. What fraction of a kilometer did he w

alk.
Mathematics
1 answer:
vladimir2022 [97]4 years ago
8 0

Answer:

57/200 Km

Step-by-step explanation:

3/10*10= 30/100

30/100+27/100=57/200km

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A triangle has the side lengths 5,7 and 11
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4 0
3 years ago
Find the positive value of x in the geometric sequence 7x-2,4x+4,3x
Goryan [66]
Hello,


Let's assume k the ratio.


 \left \{ {{3x=k*(4x+4)} \atop {4x+4=k*(7x-2)}} \right. \\\\
 \left \{ {{3x-4kx=4k} \atop {4x-7kx=-2k-4}} \right. \\\\
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\dfrac{4k}{3-4k}=\dfrac{-2k-4}{4-7k}\\\\

36k^2-6k-12=0\\
6k^2-k-2=0\\

\boxed{k= \dfrac{2}{3} \ or\ k= -\dfrac{1}{2}}\\\\

x=\dfrac{4*\dfrac{2}{3} }{3-4*\dfrac{2}{3} }=8\\
x=\dfrac{4*\dfrac{-1}{2} }{3-4*\dfrac{-1}{2} }=-\dfrac{2}{5}\\







\boxed{x= 8 \ or\ x= -\dfrac{2}{5}}\\\\





5 0
3 years ago
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