Question

For which value of c the pair of equation 2x+2y=8 and 8x +10y=c have a unique solution

Answer 1

Answer:

2x +2 y = 8

8 x + 10y = c

a1= 2 , b1 = 2 , c1= 8

a2= 8 , b2= 10 , c2= c

a1/ a2= 2/ 8 =1/4

b1/ b2 = 2/ 10 = 1/5

c1/ c2 = 8/c

thus,

a1/a2 is not equal to b1 / b2.

so, all real values of c, the given pair of the equations have a unique solution.

therefore, the given statement is true.

Step-by-step explanation:

Answer 2

Answer:

C does not equal to 32 or C = 40.