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2 years ago

What expressions are equivalent to 4x-5

Mathematics

2 answers:

Vitek1552 [10]2 years ago

8 0

Answer:

2(2x-2.5)

4(x-1.25)

5(0.8x-1)

Step-by-step explanation:

Olenka [21]2 years ago

8 0

2(2x-2.5) and 4(x-1.25) are equivalent

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A kite is stuck in a 36-ft tree. If the angle of elevation from the kite and the ground is 12, find the length of the kite.

yanalaym [24]

Answer:

173.15 ft.

Step-by-step explanation:

Please find the attachment.

Let L be the length of kite.

We have been given that a kite is stuck in 36-ft tree. The angle of elevation from the kite and the ground is 12.

We can see from our attachment that kite and tree form a right triangle. height of tree is opposite of angle of elevation and length of kite is hypotenuse.

Since we know that Sine relates the opposite and hypotenuse of a right triangle, so we will use sine to find the length of kite.

$sin(12)=\frac{36}{L}$

$L=\frac{36}{sin(12)}$

$L=\frac{36}{0.207911690818}$

$L=173.1504364105882792\approx 173.15$

Therefore, the length of kite is 173.15 ft.

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3 years ago

Which of the following are independent variables?

Lapatulllka [165]

Answer:

i think that it is oil

Step-by-step explanation:

because it does not change

4 0

3 years ago

Read 2 more answers

Lilia wants to rewrite 10/25 as a percent she decided to represent 10/25 first in a picture a.)how many sets of 25 will she need

neonofarm [45]

Answer:

4 sets of 25

Step-by-step explanation:

100/25 = 4

Not sure what you are asking in the end.

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3 years ago

An electrician charges a $100 flat fee, plus $75 per hour to work on a house.

jek_recluse [69]

Answer:

y=75x+100

Step-by-step explanation:

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2 years ago

The equation h = 0.019s

TEA [102]

Answer:

s = 28.09 m/s

Step-by-step explanation:

Given that,

The equation that gives the height of the largest ocean waves when the wind speed is s knots is given by :

$h=0.019s^2$

We need to find the wind speed if the largest waves are 15 feet high.

Put h = 15 feet in the above equation as follows :

$15=0.019s^2\\\\s^2=\dfrac{15}{0.019}\\\\s=28.09\ m/s$

So, the speed of the wind is 28.09 m/s.

4 0

3 years ago