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makvit [3.9K]
3 years ago
10

A scale model of a city has scale of 1 cm : 4.5 km. Two buildings in the model are 1.9 cm apart. To the nearest tenth of a kilom

eter, what is the actual distance between the buildings in the city?
Mathematics
1 answer:
IRINA_888 [86]3 years ago
4 0
\bf \stackrel{cm}{1}~:~\stackrel{km}{4.5}\qquad \cfrac{1}{4.5}\qquad \qquad \cfrac{\stackrel{model}{1.9}}{\stackrel{actual}{x}}=\cfrac{1}{4.5}\implies \cfrac{1.9\cdot 4.5}{1}=x
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The scale of a map is 1 inch: 250 miles. City A is 378 miles from City B. To the nearest tenth, how far is its distance on the m
juin [17]
This is a proportion question. We can express this as an equation where the answer is x:

\frac{1}{250} = \frac{x}{378}

From there, you can just cross-multiply and divide to get:

\frac{1 * 378}{250}

A tenth of 250 is 25, so this is roughly \frac{375}{250} or \frac{17}{10}, so it'll be approximately 1.7 inches on the map.
6 0
4 years ago
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Alex is planning to surround his pool ABCD with a single line of tiles. How many units of tile will he need to surround his pool
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Answer:

Hey there!

The answer to this question is the perimeter of the pool.

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x=5.66.

5.66+4.24+5.66+4.24=19.8

Thus, 19.82 is the correct answer!

Let me know if this helps :)

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natali 33 [55]
Well, the answer to this question is X = 24.
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6 0
3 years ago
On a number line, between which two consecutive whole numbers would 78 be located?
natali 33 [55]

Answer:

C ; 7 and 8

Step-by-step explanation:

The correct question is as follows;

On a number line, between which two consecutive whole numbers would 7.8 be located?

Solution

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As we know, 7.8 is a decimal, it is same as 7 + 0.8

It is greater than 7 but less than 8;

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Answer:

93 degrees

Step-by-step explanation:

The angles in a triangle add to be 180 so

180-56-31=x

x=93

8 0
3 years ago
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