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4 years ago

If the shadow of a tree is 7 m long and the shadow of a person who is 0.9 m tall is 2 m long, how tall is the tree?

Mathematics

2 answers:

NikAS [45]4 years ago

7 0

Answer:

The tree is 3.15 meters tall

Step-by-step explanation:

If the shadow of a tree is 7 m long and the shadow of a person who is 0.9 m tall is 2 m long.

The ratio of height of a person to the shadow is 0.9 / 2

Let x be the height of the tree

We need to make a proportion

height of a person/ shadow = height of the tree / shadow

$\frac{0.9}{2} =\frac{x}{7}$

Cross multiply the numbers

7 * 0.9 = 2x

6.3 = 2x

Divide by 2 on both sides

x= 3.15

The tree is 3.15 meters tall

Assoli18 [71]4 years ago

4 0

The tree is 3.15m tall.

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Answer:

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2 years ago

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Answer:

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Step-by-step explanation:

since there is a 5 in the thousandths, we round the 1 in the hundredths up and get 17.32

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2 years ago

Select the correct answer. What is the area of the cross section that is parallel to side PQRS in this rectangular box? A. 12 sq

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Answer:

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Step-by-step explanation:

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3 years ago

What value of X makes the equation -5x-(-7-4x)=-2(3x-4) true?

rjkz [21]

Answer: x= $\frac{1}{5}$ Makes It True

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3 years ago

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If the angle NME = x+97, the angle EML = x+66, and the angle NML = 141, find the angle EML

defon

Answer:

∠ EML = 94°

Step-by-step explanation:

See the attached diagram.

The three angles ∠ NME, ∠ EML and ∠ NML together make 360°.

Now, ∠ NME = x + 97, ∠ EML = x + 66 and ∠ NML = 141°

Hence, (x + 97) + ( x + 66) + 141 = 360

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⇒ 2x = 56

⇒ x = 28

So, ∠ EML = x + 66 = 28 + 66 = 94° (Answer)

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