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soldier1979 [14.2K]
2 years ago
7

In sunlight, a vertical stick 6 ft tall casts a shadow 2 ft long. At the same time a nearby tree casts a shadow 14 ft long. How

tall is the tree? Round to the nearest tenth.

Mathematics
1 answer:
Nostrana [21]2 years ago
8 0

Answer:

42.0 ft

Step-by-step explanation:

let t be the height of the tree.

<u><em>At the same time ,the measure of something </em></u>

<u><em>and its shadow are proportional</em></u> .

Then

\frac{2}{6} =\frac{14}{t}

Then

2t = 6 × 14

Then

2t = 84

Then

t = 84/2

Then

t = 42

Therefore the tree is 42 ft tall

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jeka94

Answer:

<em><u>A:</u></em>

<em><u>Square</u></em>

<em><u>Rectangle</u></em>

<em><u>Parallelogram</u></em>

<em><u>Quadrilateral</u></em>

<em><u>Rhombus</u></em>

<em><u></u></em>

<em><u></u></em>

Step-by-step explanation:

All sides and angles are equal so it is a square

All angles are 90 degrees so it is a rectangle (eliminate C)

Opposing angles and side lengths are congruent so it is a parallelogram (eliminate D)

It has 4 sides so it is a quadrilateral (eliminate B)

Since all of the other answers are eliminated you don't necessarily need to prove that is is a rhombus, but it is good practice.

Opposing sides are congruent so it is a rhombus.

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3 years ago
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bagirrra123 [75]

Answer:

24x -{6x}^{2}  = 0 \: matches \: with \: 6x(4 - x) \: and \: the \: solution \: x = 0 \ \: or \:  \: x = 4

2 {x}^{2}  + 6x = 0 \: matches \: with \: 2x(x + 3) = 0 \: and \: the \: solution \: x = 0 \: or \: x =  - 3

4x -  {x}^{2}  = 0 \: matches \: with \: x(4 - x) = 0 \: and \: the \: solution \: x = 0 \: or \: x = 4

14x -  {7x}^{2}  = 0 \: matches \: with \: 7x(2 - x) = 0 \: and \: the \: solution \: x = 0 \: or \: x = 2

5 0
3 years ago
An items is regularly priced at $20. Keisha bought it on sale for 40% off the regular price. How much did Keisha pay?
nirvana33 [79]

Answer:

Kiesha paid $12.

Step-by-step explanation:

40% of 20 is 8. So you subtract 8 from 20 and that gives you the amount she paid.

6 0
3 years ago
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ValentinkaMS [17]
Example: Set up proportions.

3/4 cups → 1 batch
x cups → 2 batches

x = 2(3/4) = 6/4 = 1 1/2 cups

3/4 cups → 1 batch
y cups → 9 batches

y = 9(3/4) = 6 3/4 cups
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3 years ago
If f(x)=x-7 and g(x)=x^3, what is G(f(x))?
lesya692 [45]
Replace the 'x' in the formula for g(x) by f(x):-

g(f(x)) =  (x-7)^3

Its D
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4 years ago
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