How can you prove a conjecture is false?

Answers

Answer 1

Answer: The easiest way to disprove any conjecture is to find just one counterexample that invalidates the argument.

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Express 4-3i/(1+i)(2-3i) in the a+bi form
Thx for helping the question is uppp
The sum of the measure of the interior angles of a polygon is 1080 what kind of polygon is it?
Write an expression for the total cost, in pounds, of: X jumpers at £15 each and y shirts at £12 each
Match each expression with its simplified form.1. a/(a^2-4)+2/(3a+6) 2.5/a+7 3.a/ab-3/b 4.6/ab+8/a 5.3a/4b^2-b/6a

A high school student volunteers to present a report to the administration about the types of lunches students prefer. He surveys members of his class and records their choices. What type of sampling did the student use? systematic random sampling voluntary sampling convenience sampling stratified sampling

Answers

The student use convenience sampling.

This is convenience sampling because in this type of sampling we use closer part of the population. Here the person is surveying his classmates, the closest samples available. In this type of sampling, it is easy to gather samples because every members are of their class easily available to give the survey.

Hence this type of sampling called convenience sampling.

For more details on convenience sampling follow the link:

brainly.com/question/1413932

Answer:

The correct answer is - convenience sampling

Step-by-step explanation:

This is convenience sampling because in this type of sampling we use closer part of the population. Here the person is surveying his classmates, the closest samples available. In this type of sampling, it is easy to gather samples.

Sample annual salaries (in thousands of dollars) for public elementary school teachers are listed. Find the sample standard deviation. Round to two decimal places if necessary 23.9
15.3
40.2
30.3
21.0
22.8
ID: ES6L 2.4.1-9+

Answers

Answer:

The standard deviation is 9.34

Step-by-step explanation:

First we need to find mean of the sample:

$m=(23.9+15.3+40.2+30.3+12+22.8)/6=24.08$

Standard deviation will be like below:

$d=√((x-m^2)/6)=9.34$

Help please!!!!!! it’s due soon

Answers

Because for perimeter you add all the sides up

4 5/6 divided by 7/8

Answers

Answer: 5 11/21

Step-by-step explanation:

the answer to 4 5/6 divided by 7/8 is 5 11/21

1. It costs $0.50 to download an individual song and $8 to download an album. Max has $20 to spend downloading music.a. Write an equation relating the number of individual songs s and the number of albums a Max can download.

Answers

Answer:

s x $0.50(a x $8.00)< $20

Step-by-step explanation: Let A stand for albums and S stand for songs

The sum of three consecutive even numbers is 78 , what is the first number

Answers

Hi there, n+(n+2)+(n+4)=78, n+n+2+n+4=78, 3n+6=78, 3n=78-6, 78-6=72 so, 3n=72, divide both sides by 3 and we get n=72/3, 72 divided by 3 equals 24. So, the first number is 24.

So, here is how I do it. I take the big number (78) and divide it by the amount of numbers (3). 78/3=26. The answer you get from that is the middle number. Then I take the number before it and the number after it (25 and 27). These are your first and last numbers. 25 is the first number

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Can someone tell me if the following steps in the correct order or where I went wrong? In experimental studies, we follow a logical method to arrive at a conclusion. Arrange the given steps in the correct sequence. State a problem Make Hypothesis perform an experiment to collect data. Ask relevant questions Arrival at a logical conclusion. Compare with the baseline value of the control group. should I switch the last two around?