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2 years ago

Sombody plees help mee. :|)))

Mathematics

2 answers:

aniked [119]2 years ago

7 0

Answer:

132 i think

Step-by-step explanation:

myrzilka [38]2 years ago

7 0

Answer:

So I think it’s one hundred thirty-two/132

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Dimostra che un quadrato è equiva-

podryga [215]

In un quadrato di lato $l$ , l'ipotenusa è $l\sqrt{2}$ . Pertanto, l'area del quadrato è $l^2$ , mentre il quadrato costruito sull'ipotenusa è $(l\sqrt{2})^2=2l^2$ .

Come puoi vedere, una quantità è la metà dell'altra.

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4 years ago

Twenty percent of a radioactive substance decays in ten years by what percent does the substance decay each year

kifflom [539]

Answer:

Step-by-step explanation:

20% takes 10 years to decay

To find per year decay, we divide the percentage by the number of years, so we get unit rate of years {per year]. Thus we have:

20%/10 = 2% per year

It's that simple.

Hence, the percentage by which the substance decays each year is 2%

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3 years ago

Read 2 more answers

Plz show work and answer thx u will get 100 points and make sure it's right

netineya [11]

For Answer A, it is 3/4 because there are 4 donuts in total and you have 3 glazed and 1 chocolate, so it will be 3 over 4.
For Answer B, it is 75% because 3 over 4 is 0.75 and if you put it in percentage, then it will be 75%.

7 0

3 years ago

The length of a shadow of a tree is 150 feet when the angle of elevation of the sun is 39°. Approximate the height of the tree.

fomenos

Answer:

The height of tree is approximately 121.5 feet.

Step-by-step explanation:

We are given following in question:

Length of shadow = 150 feet

Angle of elevation of the sun =

$\theta = 39^\circ$

The tree and the shadow forms a right angled triangle.

Thus, with the help of trigonometric relation, we can write:

$\tan \theta = \dfrac{\text{Height of tree}}{\text{Length of shadow}}$

Let x feet be the height of tree.

Putting all the values, we get,

$\tan 39^\circ = \dfrac{x}{150}\\\\0.80978 = \dfrac{x}{150}\\\\\Rightarrow x = 150\times 0.80978\\\Rightarrow x = 121.467 \approx 121.5$

Thus, the height of tree is approximately 121.5 feet.

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4 years ago

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horsena [70]

Answer:

Step-by-step explanation:

PLEASE MARK BRAINLIEST

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3 years ago