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
find the sum of infinit series 1 2 +2 2 x+3 2 x 2 +4 2 x 3 +.................
 
 
let its sum be S. S=1+2 2 x+3 2 x 2 ….n 2 x n-1 =1+4x+9x 2 ….…...n 2 x n-1 xS=x+4x 2 +9x 3 ….(n-1) 2 x n-1 +n 2 x n S(1-x)=1+3x+5x 2 +7x 3 ….-n 2 x n use AGP formula to simplify it LET THE...
 
PRAJVAL98 2 months ago
show that how to prove 93 is a prime number
 
 
Hello, giriji its simple. 93 is not a prime number because 93 is divisible by 3. To prove, any number as a prime number or vice-versa, just try to divide it from prime numbers like 2, 3, 5,...
 
Yugabrat Gogoi 15 days ago
 
Hello, girija its simple. 93 is not a prime number because 93 is divisible by 3. To prove, any number as a prime number or vice-versa, just try to divide it from prime numbers like 2, 3, 5,...
 
Yugabrat Gogoi 15 days ago
(1 -w -w²) 5 = 32
 
 
Hii shah as you know 1 + w +w ² = 0 whem w is cube root of unity.hence you can write it as -w -w² = 1 therefore 2^5 is 32.. . . . . . . . ….. . . . .
  img
Sourabh Singh 4 days ago
f:X to Y f(x)=sinx+cox+2root2 is invertible then X to Y is
 
 
Hello Student, Thanks & Regards Arun Kumar Btech, IIT Delhi Askiitians Faculty
  img
Arun Kumar 3 months ago
when going east at 10 kmph a train moving with const. velocity appears to be moving exactly north east . when my velocity is increased to 30 kmph east it appears to be moving north. a.what...
 
 
Hello You should apply concept of reletive velocity here Now you can find everything. Thanks & Regards Arun Kumar Btech IIT Delhi Askiitians faculty
  img
Arun Kumar 4 months ago
 
Ok ok..is it because angle is 45 degree so...x- component and y- component must b equal????.. Am I right Sir???
 
shalini 4 months ago
 
Thanq very much Sir :) but why should x-10 be equal to y??? :/
 
shalini 4 months ago
please solve this explaining every step i am hell confused?
 
 
Ans:Hello student, please find answer to your question Cheers!
  img
Jitender Singh 3 months ago
 
ththanks a lot sir .. now i understood , sry for askingsame ques again but i am not so good at trigonometry just a beginner so cant understand easily thanks and ya cheering.... thanku once...
 
rashmi 3 months ago
View all Questions »