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3 years ago

someone please help me with this I would really appreciate it (no files ) or (links) because it don’t work for me

Mathematics

1 answer:

torisob [31]3 years ago

3 0

Answer:

817.71

Step-by-step explanation:

Hi!

This involves applying trigonometry.

Because we are trying to figure out the height of Burj Khalifa, we are trying to find the length of AB. We already have CB, which is the adjacent side with respect to the angle. Then, AB would be the opposite side with respect to the angle given.

Remember SOH CAH TOA? Well, we have the adjacent and opposite sides involved in this, so we use the tangent function!

It will be as follows:

tan(73) = AB / 250

AB = (250)(tan(73))

AB = 817.71 meters

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Answer:

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Step-by-step explanation:

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Divide 6x3 + 1 − 14x by 3x + 6.

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4 years ago

Multiply. −5m(−2m6+4m4+m−9) Express the answer in standard form.

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3 years ago

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in a certain county, the number of charter schools is 4 less than twice the number of alternative schools. We know that there ar

Minchanka [31]

Answer:

There are $26$ alternative schools in the country

Step-by-step explanation:

Let

x------> the number of charter schools

y-----> the number of alternative schools

we know that

$x=48$

$x=2y-4$ -----> equation A

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3 years ago

The area of the regular octagon is approximately 54 cm2. A regular octagon has an apothem with length 4 centimeters and an area

ExtremeBDS [4]

Answer:

The length of line segment AB = 3.4 cm.

Step-by-step explanation:

Given:

The area of the regular octagon is approximately = 54 cm²

A regular octagon has an apothem with length = 4 cm

AB = side of the octagon

To Find:

AB = side of the octagon = ?

Solution:

A regular octagon has an Eight equal Side

We Know that,

$\textrm{area of regular octagon}=\textrm{Perimeter}\times \frac{Apothem}{2}$

substituting the given values in equation we get

$54 = Perimter\times \frac{4}{2}\\ \\\therefore Perimeter=\frac{54}{2}\\ \\\therefore Perimeter = 27\ cm\\$

Now,

Perimeter = 8 × Side

∴ Perimeter = 8 × AB

∴ 27 = 8 × AB

∴ $AB =\frac{27}{8}\\ \\\therefore AB =3.375\ cm\\\\$

After rounded to nearest 10th we get

AB =3.4 cm

The length of line segment AB = 3.4 cm.

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4 years ago

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