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Black_prince [1.1K]
3 years ago
11

A drawing has a scale 1/4 in: 12ft. How long is 8ft?

Mathematics
1 answer:
allochka39001 [22]3 years ago
4 0
If you use a proportion, you'll get:

\frac{0.25}{12} =  \frac{x}{8}

Then, you use cross products:

12x=0.25(8) \\ 12x=2

Then, you algebraically solve x:

12x=2 \\ \frac{12x}{12} =  \frac{2}{12}  \\ x= \frac{5}{3}

The answer is 5/3 inches , or 1 5/13 inches, or 1.6 repeating.
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In a school 40% are boys and 900 are girls. find the total number of students of the school and the number of boys
My name is Ann [436]

Answer:

1500 students

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Step-by-step explanation:

40% are boys, so 60% are girls.

Writing a proportion:

900 / 60% = x / 100%

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A cylindrical water towers has a diameter of 15 meters and a height of 5 meters. About how many gallons of water can the gallon
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Answer:

233445.54 gallons

Step-by-step explanation:

Given data

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substitute

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6 0
3 years ago
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6 0
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