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vodomira [7]
3 years ago
10

Is 3 yards greater than less than or equal to 21 feet

Mathematics
2 answers:
Agata [3.3K]3 years ago
3 0
Since a yard is 3 feet, then 3 times 3 is 9 and that is less than 21.
igor_vitrenko [27]3 years ago
3 0
1 yard = 3 feet
3 yards = 3 * 3 feet = 9 feet

9 feet is less than 21 feet.

Therefore, 3 yards is less than 21 feet.
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Vinil7 [7]

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Step-by-step explanation:

Given:

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\sigma=10.4

Margin of error,

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\alpha=1-CL

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Now,

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= Z_{\frac{\alpha}{2} }

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By putting the values, we get

       =\frac{(1.96)^2(10.4)^2}{(1.7)^2}

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or,

       =144  

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