Question

x + y = 6
2x - y = 3
The system of equations

has no solution

(has one solution) correct?

is coincident

Answer 1

Lets first solve the question . Rearrange the first Eq. makes x = 6 - y . Then substitute it in eq.2 which makes 2 ( 6-y ) - y = 3 , thus 12 - 2y - y = 3 . Therefore -3y = -9 . y = -3/-9 Thus y = 3 . X = 6 - y = 3 . The equations have only one solution

Answer 2

im right, thanks

Answer 3

Yes thats right

Answer 4

thanks

Answer 5

Do me best response ! :D

Answer 6

5x + 2y = 5
3x - y = 14
Which of the following equations is not a result of solving the system of equations by addition?

11x = 19

11y = -55

(11x = 33) correct?

Answer 7

Y = 3X - 14 . 5X + 6X - 28 = 5 . Thus 11x = 33 . The answer will be 11y = -55. Because the question asks for IS NOT A RESULT .

Answer 8

ohhh. thanks.

Answer 9

x + 2y = 5
3x + 5y = 14
Solve the system of equations.

(3, 1)

(7, -1)

(2, 3/2) is this correct?

Answer 10

I had a little trouble with this one

Answer 11

x = 5 - 2y . 3 ( 5 - 2y ) + 5y = 14
15 - 6y +5y = 14
15 - y = 14
15 - 14 = y
y = 1

Answer 12

x=y=3 : is only one solution if x,y belong to integer.

Answer 13

x = 5 - 2 (1)
x = 3

Answer 14

Thanks. 7x + 2y = 4
y = x + 1
Solve the system of equations.

(1/3, 4/3) correct?

(2/9, 11/9)

no solution

Answer 15

7x + 2x + 2 = 4
9x = 2
x = 2/9
y = 2/9 + 1
= 11/ 9
so 1 solution

Answer 16

i just need help with two more

Answer 17

One number is 5 more than twice another and their sum is 23.
Which of the following system of equations represents the word problem?

x + y = 23 and y = 2x + 5 correct?

y = x + 5 and y + 2(x + 5) = 23

y = 2(x + 5) and x + y = 23

Answer 18

x + y = 23 . AND y = 2x + 5
x = 23 - y
y = 2(23 - y ) + 5
y = 46 - 2y + 5
3 y = 51
y = 17
x = 23 - y
x = 23 - 17
x = 6

Answer 19

Any more question ?