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3 years ago

What is the true solution to 3In2+In(4x)

Mathematics

1 answer:

stepladder [879]3 years ago

7 0

Answer:

x=2

Step-by-step explanation:

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Can someone help me with these 5 question I have attached?

Contact [7]

Example 2: x=10

Example 3: x=-1

Example 4: x=35

Example 5: a-b+c=9

Example 6: x=1, x=1/2

Further explanation:

Example 2:

$\sqrt{4x-4} =6$

Taking Square on both sides

$(\sqrt{4x-4})^2 =(6)^2\\4x-4=36\\4x=36+4\\4x=40\\\frac{4x}{4}=\frac{40}{4}\\x=10$

Example 3:

$9+\sqrt{4x+8}=11$

Subtracting 9 from both sides

$9-9+\sqrt{4x+8}=11-9\\\sqrt{4x+8}=2\\$

Taking Square on both sides

$(\sqrt{4x+8})^2=(2)^2\\4x+8=4\\4x=4-8\\4x=-4\\\frac{4x}{4}=-\frac{4}{4}\\x=-1$

Example 4:

$8+\sqrt{x+1}=2$

subtracting 8 from both sides

$8-8+\sqrt{x+1}=2-8\\\sqrt{x+1}=-6$

Taking Square on both sides

$(\sqrt{x+1})^2=(-6)^2\\x+1=36\\$

Subtracting 1 from both sides

$x+1-1=36-1\\x=35$

Example 5:

$\sqrt{a-b+c}=3$

Taking Square on both sides

$(\sqrt{a-b+c})^2=(3)^2\\a-b+c=9\\$

Example 6:

$2\sqrt{2x-1}=4x-2$

Taking square on both sides

$(2\sqrt{2x-1})^2=(4x-2)^2\\4(2x-1)=16x^2+4-16x\\8x-4=16x^2-16x+4\\8x=16x^2-16x+4+4\\8x=16x^2-16x+8\\16x^2-16x-8x+8=0\\16x^2-24x+8=0$

dividng whole equation by 8

$2x^2-3x+1=0\\2x^2-2x-x+1=\\2x(x-1)-1(x-1)=0\\(2x-1)(x-1)=0\\2x-1=0 => x=\frac{1}{2}\\x-1=0 => x=1$

Keywords: Radical Expressions, Examples

Learn more about radical expressions at:

#LearnwithBrainly

3 0

3 years ago

What equation equals 8. for example of a two step equation would look like...

Goshia [24]

A is qual to 7

2 x 7 equal 14

14 - 6 = 8

5 0

3 years ago

Marat has $16 to buy doughnuts for Saturday morning breakfast. Specialty doughnuts cost $2 each and glazed doughnuts cost $1 eac

Mademuasel [1]

Answer:

<h2>Two possibilities are 8 Specialty doughnuts or, 16 glazed doughnuts.</h2>

Step-by-step explanation:

Let, Marat can buy x specialty doughnuts and y glazed doughnuts.

Marat will be able to buy the doughnuts if $2x + y \leq 16$ .

If we put x = 0 in 2x + y = 16, then y = 16.

For y = 0, x = 8.

Marat can buy 0 doughnuts or can buy some, but the total amount needs to be in between 16.

3 0

3 years ago

In the figure below explain why line p is or isn't parallel to line q

Nataly [62]

Answer:

Step-by-step explanation:

If the lines were parallel the angle measruing 72 and the angle measuring 109 would add up to 180 degrees(corrosponding and theroum ,sum of angles on line)

5 0

3 years ago

Brianna has £20, all in 5p coins, and £50, all in 2p coins.

azamat

Answer:

it is 70

Step-by-step explanation:

u add all of it and 70 will be your answer

7 0

3 years ago