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3 years ago

27x+3=6 what does x equal

Mathematics

2 answers:

Digiron [165]3 years ago

8 0

Answer:

1/9

Step-by-step explanation:

27x+3 = 6

-3 -3

27x = 3

/27 /27

× = 3/27 = 1/9

LenaWriter [7]3 years ago

8 0

Answer:

x=1/9

Step-by-step explanation:

First, subtract the 3 over.

27x+3=6

27x=3

Then, divide by 27 on both sides.

x=3/27

3/27 can be simplified to 1/9

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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.

dmitriy555 [2]

see the attached figure to better understand the problem

we have that

$cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units$

Step 1

Find the value of AC

we know that

in the right triangle ABC

$cos (A)=(AC/AB)\\AC=AB*cos(A)$

substitute the values in the formula

$AC=12*(1/5)\\ AC=2.4\ units$

Step 2

Find the value of BC

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

$AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}$

substitute the values

$BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units$

Step 3

Find the value of BD

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

$BD^{2} =DC^{2}+BC^{2}$

substitute the values

$BD^{2} =2^{2}+11.76^{2}$

$BD=11.93\ units$

therefore

the answer is

the length of BD is 11.93 units

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lys-0071 [83]

Answer:

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Step-by-step explanation:

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Hope this helped!

Have a supercalifragilisticexpialidocious day!

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OverLord2011 [107]

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