Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite.
x + y = 6
x - y = 0
one solution
no solution
infinite

Question

Asked 11/12/2014 11:34:53 AM

Updated 11/18/2014 8:09:43 AM

2 Answers/Comments

This conversation has been flagged as incorrect.

Flagged by yeswey [11/18/2014 8:04:52 AM]

s

x - 1 = -3 or x - 1 = 3;

x - 1 = 3;

x = 3 + 1;

x = 4;

x - 1 = -3;

x = -3 + 1;

x = -2;

x = {4, -2}

Question

Asked 11/12/2014 11:34:53 AM

Updated 11/18/2014 8:09:43 AM

2 Answers/Comments

This conversation has been flagged as incorrect.

Flagged by yeswey [11/18/2014 8:04:52 AM]

Rating

8

x + y = 6

x - y = 0

adding up equations above the result is:

2x = 6

x = 6/2 = 3

y = x = 3

There is one solution for the system x + y = 6 x - y = 0 which is (3, 3)

x - y = 0

adding up equations above the result is:

2x = 6

x = 6/2 = 3

y = x = 3

There is one solution for the system x + y = 6 x - y = 0 which is (3, 3)

Added 11/18/2014 8:04:50 AM

This answer has been confirmed as correct and helpful.

Confirmed by sujaysen [11/18/2014 9:32:47 AM]

8

y^2 - 5y - 3 = 0

a = 1, b = -5, c = -3

discriminant = b^2 - 4ac = (-5)^2 - 4(1)(-3) = 25 + 12 = 37 > 0

there are real and irrational roots for the equation y^2 - 5y - 3 = 0.

a = 1, b = -5, c = -3

discriminant = b^2 - 4ac = (-5)^2 - 4(1)(-3) = 25 + 12 = 37 > 0

there are real and irrational roots for the equation y^2 - 5y - 3 = 0.

Added 11/18/2014 8:09:43 AM

This answer has been confirmed as correct and helpful.

The horsepower unit is commonly used to indicate the power rating of household appliances. (true or false)

Question

Not Answered

Updated 12/19/2017 5:43:19 AM

1 Answer/Comment

The horsepower unit is commonly used to indicate the power rating of household appliances. FALSE.

Added 12/19/2017 5:43:19 AM

This answer has been confirmed as correct and helpful.

Solve x2 + 8x + 8 = 0 by completing the square **Weegy:** ( - 8x) ? ( - 2) = 4x **User:** Use completing the square to solve the equation x2 - 10x = -8.
Which equation is used in the process?
x2 - 10x + 25 = 17
x2 - 10x + 25 = -8
x2 - 10x - 25 = -33 (More)

Question

Updated 11/10/2014 11:58:08 AM

3 Answers/Comments

x^2 + 8x + 8 = 0

x^2 + 8x + 16 = 8

(x + 4)^2 = 8

x + 4 = sqrt 8 or x + 4 = -sqrt 8

x = -4 + 2sqrt 2 or -4 - 2sqrt 2

x^2 + 8x + 16 = 8

(x + 4)^2 = 8

x + 4 = sqrt 8 or x + 4 = -sqrt 8

x = -4 + 2sqrt 2 or -4 - 2sqrt 2

Added 11/10/2014 11:56:22 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [11/11/2014 10:16:51 AM]

Use completing the square to solve the equation x^2 - 10x = -8. the equation used in the process is x^2 - 10x + 25 = 17

Added 11/10/2014 11:58:08 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [11/11/2014 10:17:16 AM]

Use the discriminant to describe the roots of each equation. Then select the best description.
x2 - 5x + 7 = 0
double root
real and rational roots
real and irrational roots
non-real roots **Weegy:** x^2 - 5x + 7 = 0 discriminant = b^2 - 4ac = (-5)^2 - 4(1)(7) = 25 - 28 = -3 **User:** Use the discriminant to describe the roots of each equation. Then select the best description.
x2 - 4x + 4 = 0
double root
real and rational roots
real and irrational roots
non-real roots (More)

Question

Not Answered

Updated 11/18/2014 8:16:51 AM

1 Answer/Comment

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