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2 years ago

Solve the equation -3x-11=2(4x-8)-6

Mathematics

2 answers:

quester [9]2 years ago

7 0

Answer:

Step-by-step explanation:

PEMDAS

-3x-11=2(4x-8)-6

-3x-11=8x-16-6

-3x-11=8x-22

-11x-11=-22

-11x= -11

x=1

PSYCHO15rus [73]2 years ago

5 0

Answer:

x = 1

Step-by-step explanation:

- 3x - 11 = 2(4x - 8) - 6 ← distribute and simplify left side

- 3x - 11 = 8x - 16 - 6

- 3x - 11 = 8x - 22 ( subtract 8x from both sides )

- 11x - 11 = - 22 ( add 11 to both sides )

- 11x = - 11 ( divide both sides by - 11 )

x = 1

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3 years ago

T: 3(t + 3) + 5(3 + 2t) – 76 = 0

Setler [38]

Answer:

$\huge\boxed{\sf t = 4}$

Step-by-step explanation:

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3 years ago

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MA_775_DIABLO [31]

Answer:

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Step-by-step explanation:

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3 years ago

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Unit 8: Right Triangles & Trigonometry<br> Homework 2: Special Right Triangles

Kamila [148]

Answer:

17. z=39/sin45= $78/\sqrt{2}$

y=39/tan60= $39/\sqrt{3}$

x=y/sin60= $78/\sqrt{3}$

19. x= $6\sqrt{3}/tan60$ =6

y=2x=12

z= $\sqrt{2}y=12\sqrt{2}$

Step-by-step explanation:

17.

because:sin45=39/z

so: z=39/sin45= $78/\sqrt{2}$

then: tan60=39/y

so: y=39/tan60= $39/\sqrt{3}$

last: sin60=y/x

so: x=y/sin60= $78/\sqrt{3}$

19.

because: tan60= $6\sqrt{3}$ /x

so: x= $6\sqrt{3}/tan60$ =6

then: sin30=x/y

so: y=x*sin30=2x=12

last: sin45=y/z

so: z=sin45*y= $\sqrt{2}y=12\sqrt{2}$

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2 years ago

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A regular decagon has a radius of 8 cm. what is the approximate area of the decagon? recall that a decagon is a polygon with 10

lianna [129]

The approximate area of the decagon with a side of 8cm comes to be 492.40 cm².

The side of the regular decagon = 8cm

<h3>What is a regular decagon?</h3>

A regular decagon is a polygon with 10 sides that are equal to each other.

The area of a regular decagon with side a is:

$A=\frac{5}{2} a^{2} \sqrt{5+2\sqrt{5} }$

So, the area A of the regular decagon with a side of 8cm:

$A=\frac{5}{2} 8^{2} \sqrt{5+2\sqrt{5} }$

$A=160\sqrt{5+2\sqrt{5} }$

A=492.40 cm²

Therefore, the approximate area of the decagon is 492.40 cm².

To get more about the decagon visit:

brainly.com/question/19899848

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2 years ago