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
k0ka [10]
4 years ago
10

If x/y + y/x = -1 , ( x unequal y, y unequal 0) then the value of x^2 - y^2 is?

Mathematics
2 answers:
BigorU [14]4 years ago
8 0

\dfrac{x}{y}+\dfrac{y}{x}=-1|\cdot xy\\\\ x^2+y^2=-xy\\\\ x^2+xy+y^2=0\\\\ \boxed{x^3-y^3=(x+y)(x^2+xy+y^2)}\\ \Downarrow\\ x^3-y^3=(x+y)\cdot 0\\\\ \boxed{\boxed{x^3-y^3=0}}

Maurinko [17]4 years ago
3 0

Take your original equation \frac{x}{y} +\frac{y}{x} =-1

and multiply both sides by xy to remove the fractions. You are left with

x^2+y^2=-xy

So, x^2+y^2=-xy

Update: There is no numerical answer that can be found without being given a value for either x or y

You might be interested in
uppose that we have collected information on how much a sample of households spend on clothing per year. If we are 90% confident
Verizon [17]

Answer:

the chance that the population mean will either be less than $1,500 or above $2,100 is 10%

Step-by-step explanation:

We are 90% confident that the true population mean willl be between $1,500 and $2,100

This means that there is a 90% probability that the true population mean will be between $1,500 and $2,100.

So 100-90 = 10% probability that it is outside of this interval, that is, either be less than $1,500 or above $2,100.

So the correct answer is:

the chance that the population mean will either be less than $1,500 or above $2,100 is 10%

5 0
3 years ago
Marcus earns 15% commission on his total sales at work.
vodomira [7]

Answer:your answer to this prob,problem, is c) $108.75

Step-by-step explanation:

6 0
3 years ago
A student guesses on every question of a multiple choice test that has 8 questions
astraxan [27]
Ok? Where’s the rest of the question.
7 0
4 years ago
Question One
Volgvan

Answer:

7:11

Step-by-step explanation:

No of linemen = 7

No of running backs = 2

No of fullback = 1

No of quarterback =1

The total no of players on the team = 7+2+1+1 = 11

We need to find the ratio of the number of linemen to the total number of players on the team.

R = 7/11

or

R = 7:11

Hence, the required ratio is 7:11.

8 0
3 years ago
GET POINTS look at pictur 15 POINTS
kap26 [50]
2. y=2x+3 

When x =0 and y= something, the 'something' is your y-intercept which is b in the y=mx+b formula.  Then we look at what is changed in the x and y value to determine the m part.  the x increase by 1 and y increase by 2 so the m part is 2. 

3. y=-7x 
Same as the last one, there is no y-inter this time because the y=0 when x=0/  So the y deceased by 7 each time and x incease by 1 so it is -7 for the m part.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The summer after sophomore year, Haley nannied for a family and earned $2000. She
    14·1 answer
  • Please answer properly and quickly.
    15·1 answer
  • You are driving 700 miles to visit relatives...(yuck) I hope you brought your Nintendo Switch. You drive the first 140 miles in
    6·1 answer
  • Events A and B are independent. Find the indicated probability.
    11·1 answer
  • 12 mm<br> 9 mm<br> What is the length of the hypotenuse?
    7·1 answer
  • WILL MARK BRAINLIEST
    14·1 answer
  • Giving thanks and brainliest for answer to question &lt;3
    10·2 answers
  • Find x ????????????????????????
    6·1 answer
  • Canh square roots be rational numbers ?
    10·2 answers
  • Paul is running Tennis shop. He sells balls and rackets. Rackets (R) cost $1.20 each and Balls (B) cost $2:0 each. At the end of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!