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4 years ago

What is the value of x in 2(x−8)=x+5x

Mathematics

1 answer:

harkovskaia [24]4 years ago

3 0

Answer:

x=-4

Step-by-step explanation:

Lets start by distributing '2' from the parenthesis,

2x-16=x+5x

Now, lest group terms from variable 'x', for that, subtract -2x to both sides of equation,

-16=x+5x-2x

We have.

-16=4x

Isolating x, we have x=-4

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Step-by-step explanation:

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3 years ago

I don't know if this is correct but is A the correct answer?

Vikentia [17]

Answer:

Step-by-step explanation:

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4 0

3 years ago

Read 2 more answers

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.

4 0

3 years ago

Please help with #12 im confused<br> that is the key but i dont get it

Svetllana [295]

Given Equation

$\boxed{ \tt \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})}$

Step by step expansion:

$\dashrightarrow \sf \: (8 \sqrt{3} - 2 \sqrt{2} )(8 \sqrt{3} + 2 \sqrt{2})$

$\\ \\$

$\dashrightarrow \sf \: (8 \sqrt{3})^{2} - (2 \sqrt{2} {)}^{2}$

Reason:

(a + b)(a - b) = a²- b²

$\\ \\$

$\dashrightarrow \sf \: (8 {}^{2} \times { \sqrt{3} }^{2} )- (2 \sqrt{2} {)}^{2}$

$\\ \\$

$\dashrightarrow \sf \: (64 \times 3 ) - (2 \sqrt{2} {)}^{2}$

$\\ \\$

$\dashrightarrow \sf \: (64 \times 3 ) - (2 {}^{2} \times \sqrt{2} {}^{2} {)}$

$\\ \\$

$\dashrightarrow \sf \: 192- 8$

$\\ \\$

$\dashrightarrow \sf \: 184$

$\\ \\$

~BrainlyVIP ♡

4 0

3 years ago

Read 2 more answers

Find the values of x and y.<img src="https://tex.z-dn.net/?f=x%20%3D%2034%5Csqrt3%20y%20%3D%2017%5C%5Cx%20%3D%20y%20%3D%2034%2C%

Shalnov [3]

Answer:

The value of "x" is 34 and the value of "y" is 17.

Step-by-step explanation:

"x" is shown as 34 and "y" is shown on the rectangular shape in the number form of 17. If your trying to find the area of the rectangle the area is 578.

5 0

3 years ago

What is the value of x in 2(x−8)=x+5x​

What is the value of x in 2(x−8)=x+5x