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o-na [289]
3 years ago
13

In sunlight, a vertical stick has a height of 4 ft and casts a shadow 2 ft long at the same time that a nearby tree casts a shad

ow 18 ft long. How tall is the tree?
9 ft

4 ft

0.4 ft

36 ft
Mathematics
1 answer:
marshall27 [118]3 years ago
6 0
Remark
Make up a proportion that relates the tree and its properties to the stick and its properties.

Givens
Stick height (s_h) = 4
Stick shadow(s_s) = 2
Tree shadow = t_s = 18
Tree height = x

Formula
s_h / s_s = x / t_s

Substitute and solve.
4/2 = x / 18  Cross multiply
4*18 = 2 * x
72 = 2x        Divide by 2
72/2 = x       
x = 36

The height of the tree is 36 feet.     
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If <3 and <4 are vertical angles and m<3=9x+5 and m<4=5x+33 find <4
KatRina [158]

Answer:

<em>68 degrees</em>

Step-by-step explanation

If <3 and <4 are vertical angles, then <3 = <4

This means that

9x + 5 = 5x + 33

9x - 5x  = 33 - 5

4x = 28

x = 28/4

x = 7

Since <4 = 5x+ 33

<4 = 5(7) + 33

<4 = 35 + 33

<4 = 68 degrees

<em>Hence the measure of <4 is 68 degrees</em>

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I'm so confused,can someone please explain how to do this,I've watched countless things and can't seem to catch on. Thanks!(:
avanturin [10]

Answer:

40cm

Step-by-step explanation:

5 0
3 years ago
Solve for x.
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2 years ago
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The equation of a circle is (x + 4)2 + (y + 6)2 = 16. Determine the length of the radius.
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2 years ago
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Could Keenan have started with 6 strawberries? Use your expression to explain why or why not.
Dahasolnce [82]

<em>Note: you may have unintentionally missed to add the complete question. Therefore, after a little research, I am able to find the complete question which I am attaching to solve your query, which anyways would clear your concept. </em>

The complete Question:

Keenan gives Tisha half of his strawberries. Tisha keeps 4 of the strawberries she got from Keenan and gives the rest to Suvi.

a) Write an expression for the number of strawberries Tisha gives to Suvi. Use k for the number of strawberries Keenan started with.

b) Could Keenan have started with 6 strawberries? Use your expression to explain why or why not.

Answer:

Part a)

An expression for the number of strawberries Tisha gives to Suvi will be:<em> </em>n=\frac{k}{2} -4

Part b)

Keenan could not have started with 6 strawberries

Step-by-step explanation:

Part a) <em>Write an expression for the number of strawberries Tisha gives to Suvi. Use k for the number of strawberries Keenan started with.</em>

Let k be the total number of strawberries which Keenan has.

So,

\frac{k}{2} is the number of strawberries Keenan gave to Tisha.

As Tisha keeps 4 strawberries and gives the rest to Suvi. Let n be the number of strawberries which Suvi has.

So,

n=\frac{k}{2} -4

\frac{k}{2}=n+4

k=2n+8

Therefore, an expression for the number of strawberries Tisha gives to Suvi will be:<em> </em>n=\frac{k}{2} -4

b) Could Keenan have started with 6 strawberries? Use your expression to explain why or why not.

Considering the expression for the number of strawberries Tisha gives to Suvi

n=\frac{k}{2} -4

Putting k = 6 in the expression

n=\frac{6}{2} -4

Solving the expression

n=3-4         ∵ \mathrm{Divide\:the\:numbers:}\:\frac{6}{2}=3

\mathrm{Subtract\:the\:numbers:}\:3-4=-1

n=-1

So, Keenan would have started with 6 strawberries, then Suvi would have -1 strawberries. Since, strawberries cannot be negative as Suvi cannot have negative number of strawberries.

Therefore, Keenan could not have started with 6 strawberries.

Keywords: word problem, expression

Learn more about word problem from brainly.com/question/3196729

#learnwithBrainly

3 0
2 years ago
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