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
Oksanka [162]
3 years ago
8

Which equation represents inverse variation between x and y?

Mathematics
1 answer:
postnew [5]3 years ago
6 0

Inverse variation means

When the value of x increases the value of y decreases.

When the value of x decreases the value of y increases.

So for an inverse variation we have the expression

y=\frac{k}{x}

or

x=\frac{k}{y}

The expression which represents this condition is

x=-\frac{15z}{y}

Hence option b) or the second option is the right answer.

You might be interested in
Someone please help! Thxx
tangare [24]

Answer:

E, needs more info to be determined

Step-by-step explanation:

We know that Kai takes 30 minutes round-trip to get to his school.

One way is uphill and the other is downhill.

He travels twice as fast downhill than uphill.

This means that uphill accounts for 20 minutes of the round-trip and downhill accounts for 10 minutes of his trip.

However, even with this information, we do not know how far his school is.

In order to figure out how far away his school is, we would need more information about the speed at which Kai is traveling.

Simply knowing that he travels twice as fast downhill is not enough.

This question could only be solved by knowing how many miles Kai travels uphill or downhill in a given time.

3 0
3 years ago
Identify the pattern then write the next three terms in each sequence 2,8,32,128​
Allisa [31]

Step-by-step explanation:

the difference is the previous term multiplied by 4 to get the next term

2,8,32,128,512,2048,8192

Hope that helps :)

3 0
3 years ago
Prove Euler's identity using Euler's formula.<br> e^ix = cos x + i sin x
Korolek [52]

First list all the terms out.

e^ix = 1 + ix/1! + (ix)^2/2! + (ix)^3/3! ...

Then, we can expand them.

e^ix = 1 + ix/1! + i^2x^2/2! + i^3x^3/3!...

Then, we can use the rules of raising i to a power.

e^ix = 1 + ix - x^2/2! - ix^3/3!...

Then, we can sort all the real and imaginary terms.

e^ix = (1 - x^2/2!...) + i(x - x^3/3!...)

We can simplify this.

e^ix = cos x + i sin x

This is Euler's Formula.

What happens if we put in pi?

x = pi

e^i*pi = cos(pi) + i sin(pi)

cos(pi) = -1

i sin(pi) = 0

e^i*pi = -1 OR e^i*pi + 1 = 0

That is Euler's identity.

3 0
3 years ago
The winning bids at an art auction were $250, $170, $225, $185, $160, $250, $995, and $215. What would be the result of eliminat
soldier1979 [14.2K]
2450 is your answer!! :D
6 0
4 years ago
How can you isolate the variable x on one side of an inequality
Tcecarenko [31]

you combine like terms first.

for example: 2x=2+5

add up the two plus 5 so that will give you seven then you're going to divide 2 by 7 so that you isolate the x and you'll get your answer.

8 0
3 years ago
Other questions:
  • Write 1 4/10 a number as an equivalent mixed number with hundredths
    12·1 answer
  • What is the area of a triangle when the sides are 17, 8 and 9
    8·1 answer
  • Rico, Carolina, and Gloria have pizza that they are going to be sharing with other people. Rico gave away 1/3 of his cheese pizz
    6·1 answer
  • If the mean of the data below is 3.8 find m. <br>x 1 2 3 4 5 6 <br>y 2 4 7 m 6 3​
    14·1 answer
  • What would <br> 675 + 456 be
    7·2 answers
  • Which of the following is true of histograms? (Check all that apply.)
    6·2 answers
  • What is the slant height x of the square pyramid?
    9·1 answer
  • Please answer this it is 25 points
    8·2 answers
  • (x-5)(-2) Please help, need awnser by thursday
    6·1 answer
  • Joyce wakes up at 10 minutes after seven it takes her 40 minutes to get ready and walk to school what time does Joyce get to sch
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!