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
Delicious77 [7]
3 years ago
7

uppose that y varies inversely with x. Write an equation for the inverse variation. y = 2 when x = 5

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
4 0

Answer:

An equation for the inverse variation y = 2 when x = 5 is:

y=10/x

Step-by-step explanation:

Suppose that y varies inversely with x:

y=k/x

Write an equation for the inverse variation y = 2 when x = 5

Substituting y by 2 and x by 5 in the formula above:

2=k/5

Solving for k: Multiplying both sides of the equation by 5:

5(2)=5(k/5)

10=k

k=10

Then the equation is:

y=k/x

y=10/x

You might be interested in
The method of completing the square was used to solve the equation 2x^2 - 12x + 6 =0 which equation is a correct step when using
trapecia [35]
The equation we are looking at would have to be divided by 2 first.
x²-6x+3
When looking at that, I can tell that 1 may be the possible answer since you would have to subtract 6 from both sides. That would leave a 3. Let's check.
(x-3)(x-3)
x²-6x+9=6
Now subtract 6 from both sides.
x²-6x+3=0
So, 1- (x-3)²=6 would be used.
6 0
3 years ago
Select correct answer
Sergio [31]

Answer:

The values of p in the equation are 0 and 6

Step-by-step explanation:

First, you have to make the denominators the same. to do that, first factor 2p^2-7p-4 = \left(2p+1\right)\left(p-4\right)2p

2

−7p−4=(2p+1)(p−4)

So then the equation looks like:

\frac{p}{2p+1}-\frac{2p^2+5}{(2p+1)(p-4)}=-\frac{5}{p-4}

2p+1

p

−

(2p+1)(p−4)

2p

2

+5

=−

p−4

5

To make the denominators equal, multiply 2p+1 with p-4 and p-4 with 2p+1:

\frac{p^2-4p}{(2p+1)(p-4)}-\frac{2p^2+5}{(2p+1)(p-4)}=-\frac{10p+5}{(p-4)(2p+1)}

(2p+1)(p−4)

p

2

−4p

−

(2p+1)(p−4)

2p

2

+5

=−

(p−4)(2p+1)

10p+5

Since, this has an equal sign we 'get rid of' or 'forget' the denominator and only solve the numerator.

(p^2-4p)-(2p^2+5)=-(10p+5)(p

2

−4p)−(2p

2

+5)=−(10p+5)

Now, solve like a normal equation. Solve (p^2-4p)-(2p^2+5)(p

2

−4p)−(2p

2

+5) first:

(p^2-4p)-(2p^2+5)=-p^2-4p-5(p

2

−4p)−(2p

2

+5)=−p

2

−4p−5

-p^2-4p-5=-10p+5−p

2

−4p−5=−10p+5

Combine like terms:

-p^2-4p+0=-10p−p

2

−4p+0=−10p

-p^2+6p=0−p

2

+6p=0

Factor:

p=0, p=6p

7 0
3 years ago
Read 2 more answers
Which is a factor of 15xy − 45x − 6y + 18?
Nadya [2.5K]
The factor of <span>15xy − 45x − 6y + 18 is 3(y-3)(5x-2).</span>
8 0
3 years ago
Read 2 more answers
Which property of equality could be used to solve -3x = 348? A. addition property B. subtraction property C. division property D
gizmo_the_mogwai [7]

Answer:

B:subtraction property

Step-by-step explanation:

3 0
3 years ago
Quick what’s the answer
GaryK [48]
Use the Pythagorean Theorem of a² + b² = c² to solve for x. 

x² + (x + 3)² = (√117)²
x² + x² + 6x + 9 = 117
2x² + 6x + 9 = 117
2x² + 6x + 9 - 117 = 0
2x² + 6x - 108 = 0
2x² + 18x - 12x - 108 = 0
2x(x + 9) - 12(x + 9) = 0
(2x - 12)(x + 9) = 0

x = - 9, 6

Length cannot be negative so you can't use - 9. 

x = 6. Option C is your answer. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • a sales manager noticed that the number of units sold two T-shirt style A and style B, was the same during june and july. in jun
    11·1 answer
  • Problem page a wire is first bent into the shape of a rectangle with width 6cm and length 8cm . then the wire is unbent and resh
    7·1 answer
  • What is the inverse of f(x) = 3x + 6 and is it a function?
    10·1 answer
  • Find the slope of a line given the following two points: (-1, 3) and (5,-2).
    13·1 answer
  • My answer was B is less than or equal to 10, but it was wrong. So what does B equal??
    15·1 answer
  • Can someone please answer my question for real please. I’ll give extra points
    10·1 answer
  • Graph the linear equation y= 1/2x
    7·1 answer
  • Find an expression for c that will make 9x2 + 12xy +c aperfect square trinomial
    8·1 answer
  • Uniform supply accepted a 4800 90 day 10%
    10·1 answer
  • A couch priced at $300 is on sale for 40% off. What is the sale price of the couch?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!