The rule for a rotation by 180° about the origin is (x,y) -->(−x,−y)
So A(-3, 2) to A'(3, -2)
Answer:
A'(3, -2)
 
        
             
        
        
        
<u><em>The </em></u><u><em>number of trains</em></u><u><em> that arrived Dubai metro station on time is; 272 trains. </em></u>
<u><em /></u>
- We are told that 320 trains arrived the Dubai metro station in a week.
- Now, we are told that 5% got there early and 15% got there late.
This means, the percentage that got there on time is;
100% - % of trains that got there late.
- Therefore, percentage of trains that got there on time is;
100% - 15% = 85%
- Since 85% of the trains got there on time, then number of trains that got there on time is;
85% × 320 = 272
- Therefore, we can conclude that 272 trains arrived on time.
Read more at; brainly.in/question/33336249
 
        
             
        
        
        
Answer:
B) 8 and 24. 
Step-by-step explanation:
Just by looking at the answer choices, since one number must be three times the other, we can determine that the correct answer is B. 
Regardless, let's work this out mathematically. Let the first number be <em>a</em> and the second number be <em>b</em>. 
Their difference is 16. Hence:

The first number is three times the second number. So: 

Substitute: 

Solve for <em>b</em>. Subtract:

And divide both sides by two: 

So, the second number is 8. 
And since the first number is three times the second, the first number is 24. 
Our answer is B as expected. 
 
        
             
        
        
        
<h3>
Answer:  False</h3>
Explanation:
If the sample is biased, then it does not represent the population. A biased sample favors one or more groups over others. 
For example, if the sample consisted of only men, then the sample is biased toward men and leaves out women from the group. Hence, this sample does not represent everyone. 
 
        
        
        

Step-by-step explanation:
The given equation is 
Let  be the coefficient of
 be the coefficient of 
Let  be the coefficient of
 be the coefficient of 
Let  be the constant.
 be the constant.
Then the roots α,β for the equation  are
 are 
So,α=
β= .
.
So the roots are 