Answer: D. x=9√3; y=18
Step-by-step explanation:
This is a 30-60-90 special triangle, where we can use the rules to find the value of x and y. (For specific explanation, please look at the attachment below)
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<u>X value</u>
- The shortest side of the triangle that corresponds with [x] is 9 units. This is because it is half of the larger triangle's side length.
- Using the rules, the shortest side is x, then the second short side is x√3 
- Substitute value in= x√3=(9)√3=9√3 
Y value
- The shortest side of the triangle that corresponds with [x] is 9 units. This is because it is half of the larger triangle's side length.
- Using the rules, the shortest side is x, then the longest side is 2x
- Substitute value in= 2x=2(9)=18
Hope this helps!! :)
Please let me know if you have any questions
 
        
             
        
        
        
Answer:
The slope is $0.35/min and it gives the cost per minute of the phone used. 
Step-by-step explanation:
We can model this situation with a linear equation of the form 

where  is monthly cost,
 is monthly cost,  is the number of minutes,
 is the number of minutes,  is the flat monthly fee, and
 is the flat monthly fee, and  is the slope of the equation, or in our case, the amount of money charged per minute.
 is the slope of the equation, or in our case, the amount of money charged per minute.
The slope  is
 is 

 ,
,
in other words, the phone company charges $0.5 per minute.
With the slope in hand, the linear equation becomes
 ,
,
and we can find the monthly fee  from that fact that for 300 minutes the cost is $131:
 from that fact that for 300 minutes the cost is $131: 

 .
.
Therefore, 

where the slope if the equation give the cost per minute of the phone used. 
 
        
             
        
        
        
Answer: 24
Step-by-step explanation: 8x3=24 in which 18 divided by 6 is 3.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
2s + t = r
t = r - 2s
 
        
             
        
        
        
Answer:
%55
Step-by-step explanation:
divide both values by 2, multiply by 10 to give you a percentage