Solve for x. 2(x - 4) = 6(x+2)

Mathematics

2 answers:

nekit [7.7K]3 years ago

6 0

The answer is x= -5 !!!!

Thepotemich [5.8K]3 years ago

4 0

4x+2=2(x+6)
4x+2=2x+12

Subtracted 2x from both sides

2x+2=12

Now subtract 2 from both sides

2x=10

Divide 2 from both sides

x=5

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Simplify

melomori [17]

Answer: $4\sqrt{3}$

Step-by-step explanation:

For this exercise it is important to remember the following:

$i=\sqrt{-1} \\\\i^2=-1$

Given the following expression:

$-2i\sqrt{-12}$

You can notice that the radicand (the number inside the square root) is negative. Therefore, in order to simplify the expression, you need to follow these steps:

1. Replace $\sqrt{-1}$ with $i$ and simplify:

$(-2i)(i)\sqrt{12}=-2i^2\sqrt{12}=-2(-1)\sqrt{12}=2\sqrt{12}$

2. Descompose 12 into its prime factors:

$12=2*2*3=2^2*3$

3. Substitute into the expression:

$=2\sqrt{2^2*3}$

4. Since $\sqrt[n]{a^n}=a$ , you can simplify it:

$=(2)(2)\sqrt{3}=4\sqrt{3}$

4 0

3 years ago

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timofeeve [1]

The longest side of a triangle must be less than the sum of the other 2 sides

2 senarios

the 3rd side is the longest
the 3rd side is not the longest

for the 3rd side is the longest

3rdside<28+42
3rdside<70

for 3rd side isn't the longest
42 is longest
42<28+3rdside
14<3rdside

so we've got
3rdside<70 and 14<3rdside

so
14<3rdside<70

the 3rd side can be any number from 14in to 70in except 14in and 70in

6 0

3 years ago

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balandron [24]

6√90 = 2.11693286302546
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The correct answer is 2.11693286302546.

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3 years ago

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Sphinxa [80]

Answer:

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