Solve, using the substitution method, and check. $\begin{array} { c } 4 x + 3 y = - 8 \\ x + y = 0 \end{array}$

A) (-7, 7) B) (13, -13) C) (11, -11) D) ( 8, -8) E) (-8, 8) A) (-7, 7) B) (13, -13) C) (11, -11) D) ( 8, -8) E) (-8, 8)

Solve the pair of linear equations by addition. $\begin{array} { l } 14 x + 16 y = 100 \\ 4 x - 14 y = 140 \end{array}$

The answer of Solve the pair of linear equations by...

Solve the pair of linear equations by addition. $\begin{array} { l } 4 x + 9 y = 12 \\ 9 x - 4 y = 27 \end{array}$

The answer of Solve the pair of linear equations by...

Solve, using the substitution method, and check. $\begin{array} { c } 3 x + 4 y = 63 \\ x = y \end{array}$

A) (-63, -63) B) (10, 10) C) (14, 9) D) (6, 6) E) (9, 9) A) (-63, -63) B) (10, 10) C) (14, 9) D) (6, 6) E) (9, 9)

Solve, using the substitution method, and check. $\begin{array} { l } 3 x + 4 y = 43 \\ x - 5 y = - 30 \end{array}$

A) (2, 4) B) (4, 6) C) (5, 7) D) (10, 2) E) (-5, -7) A) (2, 4) B) (4, 6) C) (5, 7) D) (10, 2) E) (-5, -7)

Solve the pair of linear equations by addition. $\begin{array} { c } 6 x - 5 y = 7 \\ 12 x - 10 y = 14 \end{array}$

The answer of Solve the pair of linear equations by...

Solve the pair of linear equations by addition. $\begin{array} { c } 5 x + 9 y = 9 \\ 15 x + 27 y = 4 \end{array}$

The answer of Solve the pair of linear equations by...

Exam 9: Systems of Linear Equations

In testing a hybrid engine, various mixtures of gasoline and methanol are being tried. How much of a 90%-gasoline mixture and how much of an 80%-gasoline mixture would be needed to make 260 gal of an 85%-gasoline mixture? Amount of 90%-gasoline mixture: gal Amount of 80%-gasoline mixture: gal

(Essay)

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Question 81

Solve the pair of linear equations by addition. 2x-3y=13 3x+5y=10 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

(Multiple Choice)

4.9/5

(71)

Question 82

Solve the pair of linear equations by addition. 2x-y=2 3x+y=3 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

(Multiple Choice)

4.7/5

(71)

Question 83

How much of a 6% solution and a 11% solution would you use to make 250 mL of a 8%-electrolyte solution?

(Multiple Choice)

4.9/5

(86)

Question 84

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x-y=1 x+3y=17

(Multiple Choice)

5.0/5

(84)

Question 85

Solve, using the substitution method, and check. 4x+3y=-8 x+y=0

(Multiple Choice)

4.8/5

(76)

Question 86

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 5x-y=36 x-3y=-4

(Multiple Choice)

4.8/5

(87)

Question 87

Solve the pair of linear equations by addition. 7x-2y=23 9x+y=31 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

(Multiple Choice)

4.9/5

(64)

Question 88

Solve the pair of linear equations by addition. 14x+16y=100 4x-14y=140

(Essay)

4.9/5

(76)

Question 89

Solve the pair of linear equations by addition. 4x+9y=12 9x-4y=27

(Essay)

4.9/5

(99)

Question 90

Solve, using the substitution method, and check. 3x+4y=63 x=y

(Multiple Choice)

4.8/5

(77)

Question 91

Solve, using the substitution method, and check. 3x+4y=43 x-5y=-30

(Multiple Choice)

4.7/5

(90)

Question 92

Solve the pair of linear equations by addition. 4x-3y=8 8x-6y=16 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

(Multiple Choice)

4.8/5

(89)

Question 93

Solve graphically. An electric circuit containing two currents may be expressed by the equation 3+4=41 5-2=25 where i ₁ and i ₂ are the currents in microamperes ( $\mu A$ ). Find the two currents.

(Multiple Choice)

4.9/5

(73)

Question 94

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x+y=15 2x+y=23

(Multiple Choice)

4.9/5

(89)

Question 95

Solve the pair of linear equations by addition. 3x+2y=14 x+8y=-32 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

(Multiple Choice)

4.9/5

(69)

Question 96

Solve the pair of linear equations by addition. 6x-5y=7 12x-10y=14

(Essay)

4.9/5

(71)

Question 97

Solve the pair of linear equations by addition. 5x+9y=9 15x+27y=4

(Essay)

4.8/5

(90)

Question 98

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 6x+2y=36 3x-4y=18

(Multiple Choice)

4.8/5

(72)

Question 99

Two welders work a total of 27 h on a project. One welder made $15/h while the other made $23/h. If the gross earnings of the two welders was $485 for the job, how many hours did each welder work?

(Multiple Choice)

4.8/5

(92)

Question 100

Showing 81 - 100 of 114

In testing a hybrid engine, various mixtures of gasoline and methanol are being tried. How much of a 90%-gasoline mixture and how much of an 80%-gasoline mixture would be needed to make 260 gal of an 85%-gasoline mixture? Amount of 90%-gasoline mixture: gal Amount of 80%-gasoline mixture: gal

Solve the pair of linear equations by addition. 2x-3y=13 3x+5y=10 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 2x-y=2 3x+y=3 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

How much of a 6% solution and a 11% solution would you use to make 250 mL of a 8%-electrolyte solution?

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x-y=1 x+3y=17

Solve, using the substitution method, and check. 4x+3y=-8 x+y=0

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 5x-y=36 x-3y=-4

Solve the pair of linear equations by addition. 7x-2y=23 9x+y=31 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 14x+16y=100 4x-14y=140

Solve the pair of linear equations by addition. 4x+9y=12 9x-4y=27

Solve, using the substitution method, and check. 3x+4y=63 x=y

Solve, using the substitution method, and check. 3x+4y=43 x-5y=-30

Solve the pair of linear equations by addition. 4x-3y=8 8x-6y=16 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve graphically. An electric circuit containing two currents may be expressed by the equation 3+4=41 5-2=25 where i ₁ and i ₂ are the currents in microamperes ( $\mu A$ ). Find the two currents.

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x+y=15 2x+y=23

Solve the pair of linear equations by addition. 3x+2y=14 x+8y=-32 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 6x-5y=7 12x-10y=14

Solve the pair of linear equations by addition. 5x+9y=9 15x+27y=4

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 6x+2y=36 3x-4y=18

Two welders work a total of 27 h on a project. One welder made $15/h while the other made $23/h. If the gross earnings of the two welders was $485 for the job, how many hours did each welder work?

Basic Concepts

Signed Numbers and Powers of 10

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Basic Statistics

Binary and Hexadecimal Numbers

Filters

Exam 9: Systems of Linear Equations

Solve the pair of linear equations by addition. 2x-3y=13 3x+5y=10 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 2x-y=2 3x+y=3 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

How much of a 6% solution and a 11% solution would you use to make 250 mL of a 8%-electrolyte solution?

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x-y=1 x+3y=17

Solve, using the substitution method, and check. 4x+3y=-8 x+y=0

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 5x-y=36 x-3y=-4

Solve the pair of linear equations by addition. 7x-2y=23 9x+y=31 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 14x+16y=100 4x-14y=140

Solve the pair of linear equations by addition. 4x+9y=12 9x-4y=27

Solve, using the substitution method, and check. 3x+4y=63 x=y

Solve, using the substitution method, and check. 3x+4y=43 x-5y=-30

Solve the pair of linear equations by addition. 4x-3y=8 8x-6y=16 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve graphically. An electric circuit containing two currents may be expressed by the equation 3+4=41 5-2=25 where i 1 and i 2 are the currents in microamperes ( μA\mu AμA ). Find the two currents.

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. x+y=15 2x+y=23

Solve the pair of linear equations by addition. 3x+2y=14 x+8y=-32 If there is one common solution, select the correct ordered pair of the point of intersection. If there is no one common solution, select either parallel or coincide for the correct answer.

Solve the pair of linear equations by addition. 6x-5y=7 12x-10y=14

Solve the pair of linear equations by addition. 5x+9y=9 15x+27y=4

Draw the graphs of the pair of linear equations. Find the point of intersection. If the lines do not intersect, tell whether the lines are parallel or coincide. 6x+2y=36 3x-4y=18

Two welders work a total of 27 h on a project. One welder made $15/h while the other made $23/h. If the gross earnings of the two welders was $485 for the job, how many hours did each welder work?

Basic Concepts

Signed Numbers and Powers of 10

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Basic Statistics

Binary and Hexadecimal Numbers

Filters

Solve graphically. An electric circuit containing two currents may be expressed by the equation 3+4=41 5-2=25 where i ₁ and i ₂ are the currents in microamperes ( $\mu A$ ). Find the two currents.