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
densk [106]
3 years ago
7

Which domain restrictions apply to the rational expression?

Mathematics
1 answer:
andre [41]3 years ago
4 0

Both expression have the same denominator: 9x²-1. Thus it must not be 0.

9x²-1=(3x-1)(3x+1)=0, resulting x=+-1/3.

Restrictions: x in R\{-1/3, 1/3}

Adding those expressions:

E=(-x-2)/(9x²-1 ) + (-5x+4)/(9x²-1)=

(-x-2-5x+4)/(9x²-1)=(-6x+2)/(9x²-1)=

(-2)(3x-1)/(9x²-1)=-2/(3x+1)

E=-2/(3x+1)

You might be interested in
Tina is planning to paint a wood box she is using small paint cans that cover 20 square feet of surface area how many cans will
valkas [14]

Answer:

How much is the ouside of the box?

7 0
3 years ago
​​​​​​Write an equation to describe this situation using decimals. “Tessa bought x pounds of almonds. Lark (y) bought more than
kvasek [131]

Answer:

y = 1.6x

Step-by-step explanation:

y is the total amount/pounds of almonds that Lark bought. x is the amount that Tessa bought. 3/5 is the same as 0.6. If we multiplied Tessa's amount by 0.6 it would decrease by 2/5 so we have to add 1 to make it 1.6. To find how much Lark bought multiply 1.6 and Tessa's amount.

8 0
3 years ago
Read 2 more answers
the ages of mother and daughter are in the ratio of 5 : 3 if the age of mother is 50 years find the age of her daughter ​
netineya [11]

Answer:

30 years

Step-by-step explanation:

Forming Algebraic expressions and solving them to find the age.

Ratio of age of mother and daughter = 5 : 3

Age of mother = 5x

Age of daughter = 3x

It is given that mother's age is 50 years.

⇒ 5x = 50

Divide both sides by 5.

  x = 50÷5

 x = 10

Daughter's age = 3x

                          = 3*10

                         = 30 years

5 0
2 years ago
Select all expressions that are equivalent to 6x + 1 - (3x - 1)
REY [17]

Answer:

=3x+2

Step-by-step explanation:

Let's simplify step-by-step.

6x+1−(3x−1)

Distribute the Negative Sign:

=6x+1+−1(3x−1)

=6x+1+−1(3x)+(−1)(−1)

=6x+1+−3x+1

Combine Like Terms:

=6x+1+−3x+1

=(6x+−3x)+(1+1)

=3x+2

Let's simplify step-by-step.

6x+1−(3x−1)

Distribute the Negative Sign:

=6x+1+−1(3x−1)

=6x+1+−1(3x)+(−1)(−1)

=6x+1+−3x+1

Combine Like Terms:

=6x+1+−3x+1

=(6x+−3x)+(1+1)

8 0
3 years ago
Caroline purchased a car four years ago at a price of $28,400. According to research on this make and model, similar cars have s
gogolik [260]

Answer:

The car value is $13,312.50

Step-by-step explanation:

Trust me this stuff is easy

3 0
3 years ago
Other questions:
  • 8.27 as a mixed number
    14·2 answers
  • Jay Olshansky from the University of Chicago was quoted in Chance News as arguing that for the average life expectancy to reach
    13·1 answer
  • PLEASE HELP QUICK, I NEED IT
    11·2 answers
  • john bought a bicycle for $20 sold it for $30 rebought it for $40 and resold it for $50. How much money did he make or loose?
    7·1 answer
  • Write the given fraction in simplest form.<br><br>20/27​
    13·2 answers
  • Jack reads for 25 minutes every night. If Jack continues to read the same amount of time each night how many minutes will he rea
    11·1 answer
  • A company makes cars at two factories. Some of the cars need repairs in the first year and some do not. This two-way frequency t
    8·1 answer
  • I need to find the slope and the y intercept of y=-1/4+3<br> and how to graph it
    10·2 answers
  • What is the pattern in the values as the exponents increase?
    7·1 answer
  • PLEASE HELP ME PLEASE :(
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!