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tangare [24]
3 years ago
12

A person 2 m tall casts a shadow 10 m long. At the same time, a building casts a shadow 80 m long. How tall is the building ?

Mathematics
2 answers:
Novosadov [1.4K]3 years ago
8 0

Answer:

The building is 16 m tall.

Step-by-step explanation:

x/2 = 80/10

10x=160

10x/10 = 160/10

x=16

Volgvan3 years ago
3 0

Answer:

this is a ratio question. The answer is 16 m

Step-by-step explanation:

The persons height to shadow length ratio is 2 : 10

We want to know what the height of the building is when the shadows length is 80.


Let H represent height:

Persons ratio:

2 : 10

Buildings ratio:

H : 80


In other words for every 2 meters height a 10 m shadow is casted so we want to know how many of this ratio can fit into the building:

Let’s find the equivalent ratio:


80/10=8

That means 8 of the persons ratio makes up the building. Let’s find the height of building by 2*8=16.


therefore the building is 16m tall.

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One year on Venus is equivalent to 224.7 days on Earth. How many days on Earth, in decimal from, are equivalent to 9 ½ years on
Ivan

By using simple rule of three, a period of 9.5 years on Venus is equivalent to 2134.65 terrestrial days.

<h3>How many terrestrial days are equivalent time in Venus?</h3>

One year on Earth is equivalent to 365.3 days and one year on Venus is equivalent to 224.7 days, the equivalent terrestrial time of 9.5 years on Venus is found by simple rule of three:

x = 9.5 yr × (224.7 days / 1 yr)

x = 2134.65 days

A period of 9.5 years on Venus is equivalent to 2134.65 terrestrial days.

To learn more on simple rule of three: brainly.com/question/15209325

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Svetradugi [14.3K]

Answer:

(f-g)(x)

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Step-by-step explanation:

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distribute the subtraction to all three of the last terms.

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