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2 years ago

Help pleaseeeeee thank youuu

Mathematics

2 answers:

Citrus2011 [14]2 years ago

4 0

$500

Step-by-step explanation:

200 is 40%

I doubled it to get 400$ for 80%,

then I divided 200$ by 2 to get 100, same with the percent. in total, 500$=100%

pogonyaev2 years ago

3 0

$500 dude on top explained it well

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Help fast thanksddddd

klasskru [66]

Answer:

2) 10/9 = 1.111111111

3) 1/2 = 0.5

4) 2

5) 3/7 = 0.428571429

6) 4/5 = 0.8

7) 1

8) 42/11 = 3.818181818

9) 5/3 = 1.666666667

10) 7/4 = 1.75

Step-by-step explanation:

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3 years ago

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What is the solution of

kobusy [5.1K]

Answer:

Third option: x=0 and x=16

Step-by-step explanation:

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

Isolating √(2x+4): Addind √x both sides of the equation:

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

Squaring both sides of the equation:

$(\sqrt{2x+4})^{2}=(2+\sqrt{x})^{2}$

Simplifying on the left side, and applying on the right side the formula:

$(a+b)^{2}=a^{2}+2ab+b^{2}; a=2, b=\sqrt{x}$

$2x+4=(2)^{2}+2(2)(\sqrt{x})+(\sqrt{x})^{2}\\ 2x+4=4+4\sqrt{x}+x$

Isolating the term with √x on the right side of the equation: Subtracting 4 and x from both sides of the equation:

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

Squaring both sides of the equation:

$(x)^{2}=(4\sqrt{x})^{2}\\ x^{2}=(4)^{2}(\sqrt{x})^{2}\\ x^{2}=16 x$

This is a quadratic equation. Equaling to zero: Subtract 16x from both sides of the equation:

$x^{2}-16x=16x-16x\\ x^{2}-16x=0$

Factoring: Common factor x:

x (x-16)=0

Two solutions:

1) x=0

2) x-16=0

Solving for x: Adding 16 both sides of the equation:

x-16+16=0+16

x=16

Let's prove the solutions in the orignal equation:

1) x=0:

$\sqrt{2x+4}-\sqrt{x}=2\\ \sqrt{2(0)+4}-\sqrt{0}=2\\ \sqrt{0+4}-0=2\\ \sqrt{4}=2\\ 2=2$

x=0 is a solution

2) x=16

$\sqrt{2x+4}-\sqrt{x}=2\\ \sqrt{2(16)+4}-\sqrt{16}=2\\ \sqrt{32+4}-4=2\\ \sqrt{36}-4=2\\ 6-4=2\\ 2=2$

x=16 is a solution

Then the solutions are x=0 and x=16

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3 years ago

The population full-time equivalent number of students (FTES) at Lake Tahoe Community College for 2005-2006 through 2010-2011 wa

makkiz [27]

The mean of the set of numbers that are given in this situation regarding the population will be 1809.33.

<h3>How to solve the mean</h3>

The mean of the numbers will be:

= (1,585 + 1,690 + 1,735 + 1,935 + 2,021 + 1,890) / 6

= 1809.33

The median of the numbers will be:

= (1735 + 1890) / 2

= 1812.50

Also, from the complete question, the first quartile will be 1690 and the third quartile is 1935.

Learn more about mean on:

brainly.com/question/20118982

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Sav [38]

Find the square root of 75, and convert it.

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3 years ago

Andrew was working on a project for Science class. He began working on the project at 10:32 a.m. When he finally

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Answer:

3 hours 43 minutes

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3 years ago

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