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
Daniel [21]
3 years ago
9

If x/y = -3, then find x²/y² + y²/x² ​

Mathematics
1 answer:
tatuchka [14]3 years ago
4 0

Answer:

x/y= −3 => x= −3y

x²/y²+y²/x²=y²/x²

Step-by-step explanation:

Evaluate xy, then set it equal to −3.

x=−3y

Evaluate x²/y²+y²/x².

y²/x²

You might be interested in
A.Pictograph
guajiro [1.7K]

..Answer:

Step-by-step explanation:

...

3 0
3 years ago
What is the relationship between the measure of an angle and the reflex measure of the angle?
Alenkinab [10]
Let the measure of an angle be 'x'
Then the reflex angle will be measured by the formula (360-x)
x +(360-x) = 360
3 0
3 years ago
Which of the following best represents the highest potential for nonresponse bias in a sampling strategy? Describe why this opti
natta225 [31]

Answer:

c. Asking people leaving a local election to take part in an exit poll

Step-by-step explanation:

Asking people leaving a local election to take part in an exit poll best represents the highest potential for nonresponse bias in a sampling strategy because of the importance of the local election compared to the exit polls.

It is worthy of note that nonresponse bias occurs when some respondents included in the sample do not respond to the survey. The major difference here is that the error comes from an absence of respondents not the collection of erroneous data. ...

Oftentimes, this form of bias is created by refusals to participate for one reason or another or the inability to reach some respondents.

7 0
3 years ago
Simplify: log1/3 27 =
Scrat [10]

Answer:

-3

Step-by-step explanation:

log 1/3 27= 1/3^x=27 this means we have to simplify it. 1/3= 3^-1 power. Thus, (3^-1)^x=3^3. This is equal to 3^-x=3^3 therefore  x=-3

5 0
3 years ago
From a random sample of 41 teens, it is found that on average they spend 43.1 hours each week online with a population standard
Nadusha1986 [10]

Answer:

Step-by-step explanation:

We want to determine a 90% confidence interval for the mean amount of time that teens spend online each week.

Number of sample, n = 41

Mean, u = 43.1 hours

Standard deviation, s = 5.91 hours

For a confidence level of 90%, the corresponding z value is 1.645. This is determined from the normal distribution table.

We will apply the formula

Confidence interval

= mean +/- z ×standard deviation/√n

It becomes

43.1 ± 1.645 × 5.91/√41

= 43.1 ± 1.645 × 0.923

= 43.1 ± 1.52

The lower end of the confidence interval is 43.1 - 1.52 =41.58

The upper end of the confidence interval is 43.1 + 1.52 =44.62

Therefore, with 90% confidence interval, the mean amount of time that teens spend online each week is between 41.58 and 44.62

8 0
3 years ago
Other questions:
  • Find the volume of this
    8·2 answers
  • survey on televisions requiring repairs within four years was conducted. Nineteen out of 200 televisions from company A and 25 o
    14·1 answer
  • The measure of W is 134°, the measure of Y is 46°, and the measure of Z is 134°.
    12·2 answers
  • A 15-foot ladder is leaning against a house. The bottom of the ladder is 9 feet away from the base of the house. How far up the
    12·1 answer
  • A certain quadratic function has x-intercepts at 2 and 3. What are the x-coordinates of its vertex?
    15·1 answer
  • PLZ HELP I NEED IT ASAP I WILL GIVE BRAINLIST AND POINTS
    14·1 answer
  • ) Find the area of the shape. *
    9·2 answers
  • What exactly is a root of a logarithmic function again?
    15·1 answer
  • The local ice cream parlor sells an average of 11 milkshakes a day for $3.99
    12·1 answer
  • 6/7 divided by 12/14 please show the work
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!