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4 years ago

Round and estimate 0.9% of 74

Mathematics

1 answer:

skelet666 [1.2K]4 years ago

7 0

The answer is 6.7 bc .09 times 74 equals 6.66 so you round the 6 to a 7.

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4 years ago

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3 years ago

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Step-by-step explanation:

Given

$A = (-2,2)$

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Required

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$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}$

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$B = (1,2)$ --- $(x_2,y_2)$

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For BC

$B = (1,2)$ --- $(x_1,y_1)$

$C = (1,-2)$ --- $(x_2,y_2)$

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For CD

$C = (1,-2)$ --- $(x_1,y_1)$

$D = (-2,-2)$ --- $(x_2,y_2)$

$CD = \sqrt{(1 - -2)^2 + (-2 -- 2)^2} = \sqrt{9} = 3$

For DA

$D = (-2,-2)$ --- $(x_1,y_1)$

$A = (-2,2)$ --- $(x_2,y_2)$

$DA = \sqrt{(-2--2)^2 + (-2-2)^2} = \sqrt{16} = 4$

So, the perimeter (P) is:

$P = AB + BC + CD + DA$

$P = 3 +4 + 3 + 4$

$P = 14$

<em>The perimeter is 14 units</em>

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