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
Anna35 [415]
3 years ago
9

The variables x and y vary inversely. When y is 10, x is 10. What is x when y is 20

Mathematics
1 answer:
dezoksy [38]3 years ago
8 0
<span>inversely
y = k/x
k = yx
k = 10*10 = 100

when y = 20

20 = 100/x
20x = 100
   x = 5

answer
</span><span> x = 5 when y is 20</span>
You might be interested in
7
Fofino [41]

Answer:

15:7

Step-by-step explanation:

you put the numbers in order first the number of on time trains to off time trains

5 0
1 year ago
Can someone please help me i need this really bad.
nekit [7.7K]
The answer is the third one
6 0
3 years ago
Which best describes the behavior of the function f(x)=23x−2?
ankoles [38]

Answer:

Shifted down  2  units

Vertical stretch

Step-by-step explanation:

Hope this helps :)

6 0
3 years ago
Read 2 more answers
What is the lateral area of the pyramid?
charle [14.2K]
Answer will be C. 241.6 ft.²

4 0
3 years ago
A recent study examined hearing loss data for 1981 U.S. teenagers. In this sample, 369 were found to have some level of hearing
ruslelena [56]

Answer:

There is no enough evidence to support the claim that the proportion of US teens that have some level of hearing loss differs from 20%.

P-value=0.12

Step-by-step explanation:

We have to perform a test of hypothesis on the proportion.

The claim is that the proportion of US teens that have some level of hearing loss differs from 20%.

Then, the null and alternative hypothesis are:

H_0: \pi=0.20\\\\H_a:\pi\neq0.20

The significance level is assumed to be 0.05.

The sample, of size n=1981, has 369 positive cases. Then, the proportion is:

p=X/n=369/1981=0.186

The standard error of the proportion is:

\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.2*0.8}{1981}}=\sqrt{ 0.000081 }= 0.009

Now, we can calculate the statistic z:

z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.186-0.20+0.5/1981}{0.009}=\dfrac{-0.014}{0.009}=-1.556

The P-value for this two-tailed test is:

P-value=2*P(z

The P-value is below the significance level, so the effect is not significant. The null hypothesis failed to be rejected.

There is no enough evidence to support the claim that the proportion of US teens that have some level of hearing loss differs from 20%.

7 0
3 years ago
Other questions:
  • Select the two equations that can be used to solve the following inequality
    12·1 answer
  • Mr.George divided his money in the ratio 2:6 between Evan and ricky.Evan got the smaller amount of $420. How much did ricky rece
    9·1 answer
  • What is the answer to number 18?
    9·2 answers
  • What is 80.106 written in expanded form?
    12·1 answer
  • What is a No solution? What is a infinite solution?
    11·2 answers
  • Write the next three terms of the arithmetic sequence.
    13·2 answers
  • I was doing my khan and i got stuck<br> 6=2(y+2)
    9·1 answer
  • Help plz, asap!
    8·2 answers
  • Please answer part A and B ( Dividing fractions )
    11·1 answer
  • Answer quickly only if you know ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!