Multiple ChoiceUse substitution to solve the following system of linear equations.4x+y=14x+y=14x+y=1x−y=4x-y=4x−y=4226views2rank
Multiple ChoiceUse substitution to solve the following system of linear equations.4x+2y=74x+2y=74x+2y=7x+5y=4x+5y=4x+5y=4200views2comments
Multiple ChoiceUse the elimination method to solve the following system of linear equations.2x+y=12x+y=12x+y=13x−y=43x-y=43x−y=4196views1rank
Multiple ChoiceUse the elimination method to solve the following system of linear equations.10x−4y=510x-4y=510x−4y=55x−4y=15x-4y=15x−4y=1281views2rank
Multiple ChoiceSolve the following system of equations. Classify it as CONSISTENT (INDEPENDENT or DEPENDENT) or INCONSISTENT.y=5x−17y=5x-17y=5x−1715x−3y=5115x-3y=5115x−3y=51184views2rank
Multiple ChoiceSolve the following system of equations. Classify it as CONSISTENT (INDEPENDENT or DEPENDENT) or INCONSISTENT.2x+8y=72x+8y=72x+8y=7x+4y=19x+4y=19x+4y=19182views3rank
Textbook QuestionUse the substitution or elimination method to solve each system of equations. Identify any inconsistent systems or systems with infinitely many solutions. If a system has infinitely many solutions, write the solution set with y arbitrary. 2x + 6y = 6 5x + 9y = 9241views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (2, 3) x + 3y = 11 x - 5y = - 13435views
Textbook QuestionIn Exercises 1–5, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.321views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (- 3, 5) 9x + 7y = 8 8x - 9y = - 69256views
Textbook QuestionIn Exercises 1–5, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.233views
Textbook QuestionIn Exercises 1–5, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets.233views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (2, 5) 2x + 3y = 17 x + 4y = 16338views
Textbook QuestionUse the substitution or elimination method to solve each system of equations. Identify any inconsistent systems or systems with infinitely many solutions. If a system has infinitely many solutions, write the solution set with y arbitrary. 1/6x + 1/3y = 8 1/4x + 1/2y = 12324views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x + y = 4 y = 3x238views
Textbook QuestionA chemist needs to mix a solution that is 34% silver nitrate with one that is 4% silver nitrate to obtain 100 milliliters of a mixture that is 7% silver nitrate. How many milliliters of each of the solutions must be used?438views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x + 3y = 8 y = 2x - 9216views
Textbook QuestionA chemist needs to mix a solution that is 34% silver nitrate with one that is 4% silver nitrate to obtain 100 milliliters of a mixture that is 7% silver nitrate. How many milliliters of each of the solutions must be used?438views
Textbook QuestionThe perimeter of a table tennis top is 28 feet. The difference between 4 times the length and 3 times the width is 21 feet. Find the dimensions. 183views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x = 4y - 2 x = 6y + 8289views
Textbook QuestionSolve each problem. Alcohol MixtureBarak wishes to strengthen a mixture that is 10% alcohol to onethat is 30% alcohol. How much pure alcohol should he add to 12 L of the 10% mixture?154views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 5x + 2y = 0 x - 3y = 0222views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 5x + 2y = 0 x - 3y = 0222views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 2x + 5y = - 4 3x - y = 11217views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 2x - 3y = 8 - 2x 3x + 4y = x + 3y + 14250views
Textbook QuestionSolve each system by substitution. See Example 1. -2x = 6y + 18 -29 = 5y - 3x277views
Textbook QuestionSolve each problem using a system of equations. A company sells recordable CDs for $0.80 each and play-only CDs for $0.60 each. The company receives $76.00 for an order of 100 CDs. However, the customer neglected to specify how many of each type to send. Determine the number of each type of CD that should be sent.164views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. y = (1/3)x + 2/3 y = (5/7)x - 2186views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 4x + y = -23 x - 2y = -17147views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. x + y = 1 x - y = 3255views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 2x + 3y = 6 2x - 3y = 6240views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 2x + 3y = 6 2x - 3y = 6240views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. x + 2y = 2 - 4x + 3y = 25264views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 5x + 7y = 6 10x - 3y = 46177views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 4x + 3y = 15 2x - 5y = 1187views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 6x + 7y + 2 = 0 7x - 6y - 26 = 0385views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 3x - 4y = 11 2x + 3y = - 4226views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. x/2+ y/3 = 4 3x/2+3y/2 = 15162views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. (2x-1)/3 + (y+2)/4 = 4 (x+3)/2 - (x-y)/2 = 3260views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 3x = 4y + 1 3y = 1 - 4x196views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x = 9-2y x + 2y = 13221views
Textbook QuestionSolve each system of equations. State whether it is an inconsistent system or has infinitely many solutions. If a system has infinitely many solutions, write the solution set with x arbitrary. See Examples 3 and 4. 9x - 5y = 1 -18x + 10y = 1257views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. y = 3x - 5 21x - 35 = 7y200views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. 3x - 2y = − 5 4x + y = 8174views
Textbook QuestionSolve each system of equations. State whether it is an inconsistent system or has infinitely many solutions. If a system has infinitely many solutions, write the solution set with x arbitrary. See Examples 3 and 4. 5x - 5y - 3 = 0 x - y - 12 = 0273views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x + 3y = 2 3x + 9y = 6187views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x + 3y = 2 3x + 9y = 6187views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x/4 - y/4 = −1 x + 4y = -9210views
Textbook QuestionIn Exercises 31–42, solve by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. 2x = 3y + 4 4x = 3 - 5y193views
Textbook QuestionDetermine the system of equations illustrated in each graph. Write equations in standard form. 240views
Textbook QuestionDetermine the system of equations illustrated in each graph. Write equations in standard form. 221views
Textbook QuestionIn Exercises 43–46, let x represent one number and let y represent the other number. Use the given conditions to write a system of equations. Solve the system and find the numbers. The sum of two numbers is 7. If one number is subtracted from the other, their difference is -1. Find the numbers.189views
Textbook QuestionIn Exercises 47–48, solve each system by the method of your choice. (x + 2)/2 - (y + 4)/3 = 3 (x + y)/5 = (x - y)/2 - 5/2254views
Textbook QuestionIn Exercises 47–48, solve each system by the method of your choice. (x - y)/3 = (x + y)/2 - 1/2 (x + 2)/2 - 4 = (y + 4)/3172views
Textbook QuestionIn Exercises 47–48, solve each system by the method of your choice. (x - y)/3 = (x + y)/2 - 1/2 (x + 2)/2 - 4 = (y + 4)/3172views
Textbook QuestionIn Exercises 49–50, solve each system for x and y, expressing either value in terms of a or b, if necessary. Assume that a ≠ 0, b ≠ 0 5ax + 4y = 17 ax + 7y = 22283views
Textbook QuestionSolve each system. (Hint: In Exercises 69–72, let 1/x = t and 1/y = u.) 2/x + 3/y = 18 4/x - 5/y = -8142views
Textbook QuestionUse a system of linear equations to solve Exercises 73–84. How many ounces of a 15% alcohol solution must be mixed with 4 ounces of a 20% alcohol solution to make a 17% alcohol solution?164views
Textbook QuestionFor what value(s) of k will the following system of linear equations have no solution? infinitely many solutions? x - 2y = 3 -2x + 4y = k292views
Textbook QuestionUse a system of linear equations to solve Exercises 73–84. How many ounces of a 50% alcohol solution must be mixed with 80 ounces of a 20% alcohol solution to make a 40% alcohol solution?174views
Textbook QuestionUse a system of equations to solve each problem. See Example 8. Find an equation of the line y = ax + b that passes through the points (-2, 1) and (-1, -2).226views
Textbook QuestionUse a system of equations to solve each problem. See Example 8. Find an equation of the parabola y = ax^2 + bx + c that passes through the points (2, 3), (-1, 0), and (-2, 2).214views
Textbook QuestionExercises 86–88 will help you prepare for the material covered in the first section of the next chapter. a. Does (4, −1) satisfy x + 2y = 2? b. Does (4, -1) satisfy x- 2y= 6?180views
Textbook QuestionExercises 86–88 will help you prepare for the material covered in the first section of the next chapter. a. Does (4, −1) satisfy x + 2y = 2? b. Does (4, -1) satisfy x- 2y= 6?180views
Textbook QuestionSolve each problem. See Examples 5 and 9. The sum of two numbers is 47, and the difference between the numbers is 1. Find the numbers.149views