How many pairs of (x,y) satisfy the equations 3x+6y=21 and 4x+8y=16

2 years ago

Share

Answers : (4)

                    

as 3/4=6/8  so these lines are parallel, i.e. have no common point, so 0 pairs of (x,y) will satisfy this

2 years ago
                    

3x + 6y = 21


or, x+2y=7


 


4x+8y=16


x+2y=4


 


Inconsistent equations. No solution.

2 years ago
                    

dear suresh,


these two equations reaemble two parallel lines as a1/a2=b1/b2not equal to c1/c2.


so these two lines never intersect and thus have no solution

one year ago
                    

no solution since they are parallel lines
please post some tough questions next time
:)

one year ago

Post Your Answer

More Questions On Algebra

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
If p , p’ are the lengths of the perpendiculars from the origin from the straight line, whose equations are xsecR+ycosecR=a amd xcosR-ysinR=acos2R, then show that 4p2 + 4p’2=a2 .
 
 
Hello Student from what i understand by your representation. Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 19 days ago
A bag contains 5 red nd 3 blue balls. if 3 balls are drawn at random without replacement the probability that exactly two of three balls were red, the first ball being red is??
 
 
Total no of ways of selecting 3 balls out of total 8 balls=8C3 Total no of selecting 2 red ball out of 5 red ball and 1 blue ball out of 3 blue balls=5C2*3C1 Hence the probability of exactly...
  img
Rinkoo Gupta 3 months ago
 
Total no. of selections=5C1*7C2 Total possible selections =5C2*3C1 Hence probablity=5C2*3C1 /5C1*7C2 =2/7
 
VISHAL GAUTAM 3 months ago
 
This is correct answer.
 
Pushkar Aditya 3 months ago
Find the domain of the function f (x) = log3 - log4 6x-4 6x+5 .
 
 
attaching the solution if you mean f(x) = log 3 (log 4 ((6x-4)/(6x+5))) i have already solved that problem ; you can see that Thanks & Regards Sudhir, askIITians Faculty Qualification....
  img
sudhir pal 5 months ago
 
attaching two answers for this problem since expression of your question is not that clear Thanks & Regards Sudhir, askIITians Faculty Qualification. IIT Delhi
  img
sudhir pal 5 months ago
 
Thanks and Regards, M.MURALIKRISHNA askIITians faculty
  img
MuraliKrishna Medavaram 5 months ago
how to calculate sin11.29 degree
 
 
Use Log tables... (natural sines)
 
Utkarsh Verma 7 months ago
 
0.1957749
 
Utkarsh Verma 11 months ago
[sqrt(1)]+[sqrt(2)]+[sqrt(3)]+.......+[sqrt(2115)]=?
 
 
Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 19 days ago
View all Questions »