Multiple ChoiceUse substitution to solve the following system of linear equations.4x+y=14x+y=14x+y=1x−y=4x-y=4x−y=4175views1rank
Multiple ChoiceUse substitution to solve the following system of linear equations.4x+2y=74x+2y=74x+2y=7x+5y=4x+5y=4x+5y=4163views2comments
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=4162views
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=1218views2rank
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=51159views2rank
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=19160views2rank
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 = 9178views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (2, 3) x + 3y = 11 x - 5y = - 13383views
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.277views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (- 3, 5) 9x + 7y = 8 8x - 9y = - 69217views
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.199views
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.199views
Textbook QuestionIn Exercises 1–4, determine whether the given ordered pair is a solution of the system. (2, 5) 2x + 3y = 17 x + 4y = 16300views
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 = 12241views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x + y = 4 y = 3x212views
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?408views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x + 3y = 8 y = 2x - 9200views
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?408views
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. 165views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. x = 4y - 2 x = 6y + 8264views
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?127views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 5x + 2y = 0 x - 3y = 0197views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 5x + 2y = 0 x - 3y = 0197views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 2x + 5y = - 4 3x - y = 11196views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. 2x - 3y = 8 - 2x 3x + 4y = x + 3y + 14216views
Textbook QuestionSolve each system by substitution. See Example 1. -2x = 6y + 18 -29 = 5y - 3x246views
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.146views
Textbook QuestionIn Exercises 5–18, solve each system by the substitution method. y = (1/3)x + 2/3 y = (5/7)x - 2168views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 4x + y = -23 x - 2y = -17131views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. x + y = 1 x - y = 3227views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 2x + 3y = 6 2x - 3y = 6218views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 2x + 3y = 6 2x - 3y = 6218views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. x + 2y = 2 - 4x + 3y = 25212views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 5x + 7y = 6 10x - 3y = 46159views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 4x + 3y = 15 2x - 5y = 1170views
Textbook QuestionSolve each system by elimination. In systems with fractions, first clear denominators. See Example 2. 6x + 7y + 2 = 0 7x - 6y - 26 = 0324views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 3x - 4y = 11 2x + 3y = - 4199views
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 = 15144views
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 = 3214views
Textbook QuestionIn Exercises 19–30, solve each system by the addition method. 3x = 4y + 1 3y = 1 - 4x171views
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 = 13199views
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 = 1202views
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 = 7y183views
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 = 8158views
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 = 0232views
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 = 6171views
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 = 6171views
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 = -9194views
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 - 5y168views
Textbook QuestionDetermine the system of equations illustrated in each graph. Write equations in standard form. 193views
Textbook QuestionDetermine the system of equations illustrated in each graph. Write equations in standard form. 188views
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.168views
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 - 5/2220views
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)/3158views
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)/3158views
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 = 22257views
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 = -8129views
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?150views
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 = k235views
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?158views
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).193views
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).172views
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?159views
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?159views
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.134views