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MariettaO [177]
3 years ago
10

A scale drawing has a scale of 1/4in:12ft. Find the length on the drawing for each actual length. 15 ft.

Mathematics
1 answer:
leonid [27]3 years ago
6 0
So the ratio is at ¼ : 12, namely the drawing has ¼ inch to an actual 12 feet.

so, what would it be for an actual 15 feet on the drawing then?

\bf \begin{array}{ccll}
\stackrel{inches}{drawing}&\stackrel{feet}{actual}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{1}{4}&12\\\\
d&15
\end{array}\implies \cfrac{\quad \frac{1}{4}\quad }{d}=\cfrac{12}{15}\implies \cfrac{\quad \frac{1}{4}\quad }{\frac{d}{1}}=\cfrac{12}{15}
\\\\\\
\cfrac{1}{4}\cdot \cfrac{1}{d}=\cfrac{12}{15}\implies \cfrac{1}{4d}=\cfrac{12}{15}\implies 15=48d\implies \cfrac{15}{48}=d\implies \cfrac{5}{16}=d
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Step-by-step explanation:

y - x = -5

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x = 9.6

Step-by-step explanation:

Before we can figure out what x is, we need to figure out what the unlabeled side is. To figure that out, multiply the hypotenuse (12) by the sine of the angle labeled (34)

12 * sin(34)

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12 * 0.6

<em>Now simply multiply 12 by 0.6 to get 7.2.</em>

The unlabeled side is approx. 7.2 units long.

Now we know what the unlabeled side is. Now, to find x, find the square root of 12 squared minus 7.2 squared.

x = √12² - 7.2²

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x = √144 - 51.84

<em>Subtract 51.84 from 144 to get 92.16.</em>

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x equals 9.6.

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2 years ago
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Soloha48 [4]

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Answer:

Total cost= $141.75

Step-by-step explanation:

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<u>First, we need to determine the unitary price of each and choose the lowest one:</u>

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The lowest price is $9.45.

<u>Now, the total cost of 15 DVDs:</u>

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3 0
2 years ago
Read 2 more answers
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