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Karolina [17]
3 years ago
14

} " alt=" x - 2\sqrt{x - 3 = 0} " align="absmiddle" class="latex-formula">
what value of x satisfies the equation above?
x=​
Mathematics
1 answer:
GrogVix [38]3 years ago
7 0

Answer:

No Real Solutions

Step-by-step explanation:

So we have:

x-2\sqrt{x-3}=0

First, determine the domain restrictions. The expression under the radical cannot be less than 0. Therefore:

x-3\geq 0\\x\geq 3

Therefore, our final answers must be greater than or equal to 3:

Now, going back to the original equation, subtract x from both sides:

-2\sqrt{x-3}=-x

Now, square both sides:

4(x-3)=x^2

Distribute:

4x-12=x^2

Subtract 4x and add 12 to both sides:

0=x^2-4x+12

This isn't factor-able. Let's use the quadratic formula. a is 1, b is -4 and c is 12:

x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}

Substitute:

x=\frac{4\pm\sqrt{(-4)^2-4(1)(12)}}{2(1)}

Simplify the radical:

x=\frac{4\pm\sqrt{-32}}{2(1)}

The number under the radical is negative. In other words, there are no real solutions.

You might be interested in
Three people invest at a ratio of 1:4:7. If the partnership is worth $636,000, what did each person invest?
olga_2 [115]

Answer:

See the detailed answers below

Step-by-step explanation:

Given data

Ratio=  1:4:7

combined ratio= 1+4+7= 12

Total amount= $636,000

Apply the part to all method

The first person will take

1/12= x/ 636,000

cross multiply

12x= 636,000*1

x= 636,000/12

x= 53000

The second person will take

4/12= x/ 636,000

cross multiply

12x= 636,000*4

x= 2544000/12

x= 212000

The third person will take

7/12= x/ 636,000

cross multiply

12x= 636,000*7

x= 4452000/12

x= 371000

6 0
3 years ago
What is 60 increased<br> by 20%
valina [46]

Answer:

72.00

Step-by-step explanation:

hope this helps! :D

8 0
3 years ago
What is the value of 5|Y| + 4|Z| ? A.47 B.10 C.38 D.23
Troyanec [42]
23 good luck hopefully you pass the test
7 0
3 years ago
the base of the Eiffel tower has a square with an area of 15625 square feet what is the length of the side of the base​
tigry1 [53]
77374747484847373848484848
6 0
3 years ago
Solve for x <br>3(x - 2) = 6x - 12<br>​
nalin [4]

Answer:

The answer is 2

Step-by-step explanation:

Here's how I got it:

3(x - 2) = 6x - 12

Multiply 3 times x and 3 times 2, this is what you would get

3x - 6 = 6x - 12

Then, subtract the lowest x with the bigger X, this way you would have x on one side:

3x - 6 = 6x - 12

-3x        -3x

This is what you should have after this:

-6 = 3x - 12

Now, to get the variable (letter that represents a number) by itself, you have to add 12 to both sides like this:

-6 = 3x - 12

+12        +12

You would get this:

6 = 3x

Finally, you have to get x by itself, so you have to divide 3 on both sides like this

6/3 = 3/3 x

That's why, your answer is 2

5 0
3 years ago
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