1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
miss Akunina [59]
3 years ago
13

1.Simplify. 2.Simplify. 3.Which statement best reflects the solution(s) of the equation?

Mathematics
1 answer:
mariarad [96]3 years ago
5 0

Answer to question 1


We want to simplify


\frac{\frac{4x}{5+x}}{\frac{6x}{x+2}}


Let us change the middle bar to a normal division sign by rewriting the expression to obtain,


\frac{4x}{5+x} \div \frac{6x}{x+2}



We now multiply the first fraction by the reciprocal of the second fraction to get,




\frac{4x}{5+x} \times \frac{x+2}{6x}


We cancel out common factors to obtain,



\frac{2}{5+x} \times \frac{x+2}{3}


We multiply out to obtain,




\frac{2(x+2)}{3(x-5)}



ANSWER TO QUESTION 2


We want to simplify,


\frac{\frac{x^2+4x+3}{2x-1}}{\frac{x^2+x}{2x^2-3x+1}}



Let us change the middle bar to a normal division sign by rewriting the expression to obtain,


\frac{x^2+4x+3}{2x-1}\div \frac{x^2+x}{2x^2-3x+1}



We now multiply the first fraction by the reciprocal of the second fraction to get,


\frac{x^2+4x+3}{2x-1}\times \frac{2x^2-3x+1}{x^2+x}



We now factor to obtain,


\frac{(x+1)(x+3)}{2x-1}\times \frac{(x-1)(2x-1)}{x(x+1)}



We now cancel out common factors to obtain,


\frac{(x+3)}{1}\times \frac{(x-1)}{x}



We now multiply out to get,


\frac{(x-1)(x+3)}{x}



ANSWER TO QUESTION 3



We want to solve the equation,



\frac{1}{x-1}+\frac{2}{x}=\frac{x}{x-1}


We need to multiply through by least common multiple of the denominators which is ,


x(x-1)





x(x-1) \times \frac{1}{x-1}+x(x-1) \times \frac{2}{x}=x(x-1) \times \frac{x}{x-1}



x+2(x-1)=x(x)


x+2x-2=x^2





3x-2=x^2






x^2-3x+2=0



(x-1)(x-2)=0



x=1,x=2


But x=1 does not satisfy the equation. It will result in division by zero which is undefined. This is an extraneous solution.



Therefore x=2 is the only solution.


The correct answer is D.










You might be interested in
The average value of two positive numbers is 30% less than one of the two numbers. By which percentage is average value bigger t
Viefleur [7K]

Answer:

75% bigger

Step-by-step explanation:

Let the first number be x and the second be y.

So:

Average = \frac{x + y}{2}

And:

Average = (1 - 30\%) * x -----30% less than x

Substitute Average = (1 - 30\%) * x in Average = \frac{x + y}{2}

\frac{x + y}{2} = (1 - 30\%) * x

\frac{x + y}{2} = (1 - 0.30) * x

\frac{x + y}{2} = 0.70 * x

\frac{x + y}{2} = 0.70x

Cross multiply

x + y = 0.70x * 2

x + y = 1.40x

Collect like terms

1.40x - x = y

0.40x = y

Make x the subject

x = \frac{y}{0.40}

x = 2.50y

So, the average is:

Average = (1 - 30\%) * x

Average = (1 - 30\%) * 2.50y

Average =0.70 * 2.50y

Average =1.75y

Rewrite as:

Average =(1 + 0.75)y

Express as percentage

Average =(1 + 75\%)y

This means that the average is 75% bigger than the second number

6 0
2 years ago
Simplify 36*3.<br> O A. 35<br> B. 36<br> O C. 37<br> O D. 96<br> HELP ME
Lelu [443]

Answer:

12/1

Step-by-step explanation:

hope this helped if not sorry

6 0
2 years ago
Select the correct answer.
Genrish500 [490]
B 16 miles an hour

Hope this helps
3 0
2 years ago
Solve by taking the square root of both sides 3(x-1)^2-162=0
Natali5045456 [20]
We know that: <span>3(x-1)^2-162=0
or (x-1)</span>²= 162:3
and (x-1)²= 54
we <span>take the square root of both sides 
* x-1=</span>√54= 3√6 or x=1+3√6
* x-1= -<span>√54= -3√6 or x=1-3√6
This equation has 2 solutions</span>
7 0
3 years ago
Read 2 more answers
A number is 4 Hundreds more than 142. What is the number ?
weqwewe [10]
542 beacuse 142+400
4+1=5 4+0=a 2+0=2
4 0
3 years ago
Read 2 more answers
Other questions:
  • Each foot has 5 toes. How many toes do 6 feet have?
    11·1 answer
  • Solve by both sides variable josh has two leaking pipes in his basement. while waiting for the plumber to come, josh puts a buck
    11·1 answer
  • The sum of three consecutive numbers is 72 what are the smallest of these numbers
    7·1 answer
  • Solve the quadratic equation for x. What is one of the roots? (x − 5)2 = 9
    14·2 answers
  • Can someone help me with number 25
    8·1 answer
  • Please help me branniest
    8·1 answer
  • A. 6.3 <br> B. 4.5 <br> C. 7.2<br> D. 5.4
    15·1 answer
  • The sum of two numbers is 68. Their difference is 15. Write a system of equations you could use to solve this problem.
    15·1 answer
  • The measure of the exterior angle of the triangle is °<br> .
    5·1 answer
  • Express the following sentence in mathematic sentence, dividing 120 by 40 is equal to 3​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!