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3 years ago

Help me plissss .....................

Mathematics

2 answers:

alexdok [17]3 years ago

4 0

^^^^^^^^^^^^^^^^^^^^^^

Temka [501]3 years ago

3 0

Answer:

Step-by-step explanation:

$4 = 2^{2}\\y = 1/4 * (2^{2})^{3/2} = 1/4 * 2^{3}= 1/4 * 8 = 2$

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PLEASE HELP simple geometry problem

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4 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,

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

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4 years ago

Solve the following quadratic equation:<br> (3x – 5)2 = 4

Katarina [22]

Answer:

Step-by-step explanation:

It is mandatory (required) to use " ^ " for exponentiation:

(3x – 5)^2 = 4

Taking the square root of both sides, we get

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(b) 3x = 3, or x = 1

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3 years ago