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Otrada [13]
3 years ago
14

Need help please, thanks!

Mathematics
1 answer:
MakcuM [25]3 years ago
4 0
Given:
1 inch : 18 kilometers

Let us use the ratio and proportion method:

a:b = c:d where ad = bc

0.8 inches is <u>14.4 kilometers</u>

1 : 18 = 0.8 : x
x = 0.8 * 18
x = 14.4 km

1.4 inches is <u>25.2 kilometers</u>

1: 18 = 1.4 : x
x = 18 * 1.4
x = 25.2 km

2.1 inches is <u>37.8 kilometers</u>

1 : 18 = 2.1 : x
x = 18 * 2.1
x = 37.8 km

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I need the answer to this please help
Brums [2.3K]

Answer:

-1/11

Step-by-step explanation:

\frac{11x}{12} -\frac{1}{6} =\frac{-1}{4}    add 1/6 to both sides

\frac{11x}{12} =\frac{1}{6} -\frac{1}{4}  make the same denominator 12 on the right side

\frac{11x}{12} =\frac{1}{6}*\frac{2}{2}  -\frac{1}{4}*\frac{3}{3}  solve

\frac{11x}{12} =\frac{2}{12} -\frac{3}{12} =\frac{2-3}{12} = \frac{-1}{12}

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x= -1/11

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3 years ago
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Kipish [7]

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7%

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