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mathematics
college algebra

Questions and Answers of College Algebra

In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 3 3x-5y = (15x + 5y = 21
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. (2x + y = -1 x +y = 3
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x - y -z = 1 2x + 3y + z = 2 = 0 3x + 2y
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. 2x + y -2x + 2y + 3x - 4y 4y - 3z = z = z = 3z 3z = 0 -7 7
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. = 3x - y = 8 1 -2x + y = 4 =
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 3x - y = 4 -2x+y= 5
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x y z = z = 1 -4 -x + 2y3z = 3x - 2y 7z = 0
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x - y = -1 1 3 2 2 x +
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. 2x-3y - z = 0 -x + 2y + 2 = 5 3x - 4y - z = 1 =
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 6x + 5y = 7 (2x + 2y = 2
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x - y = 6 2x - 3z 3z = 16 2y + z = 4
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x + y = -4 0 3x - 2z = -11 -2y + 4z
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. 2x - 3y z = 0 3x + 2y + 2z = 2 x + 5y + 3z = 2
In Problems 51–56, solve for x. x X 4 3 = 5
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. J-4x + y = 0 6x - 2y = 14
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x - 4y + 2z = -9 4 7 3x + y + z + у -2x + 3y - 3z
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x + y - 3z = 0 -2x + 2y + 2 = -7 z 3x 4y - 3z = 7
In Problems 51–56, solve for x. X 3 x -2
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. 2x - 2y + 3z = 6 4x3y + 2z = 0 -2x + 3y 7z = 1
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 6x + 5y = 13 2x + 2y = 5
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. 3x - 2y + 2z = 6 7x - 3y + 2z = -1 2x - 3y + 4z 0
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. -4x + y = 5 6x - 2y = -9
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 2x + y = ax + ay = -3 -a a 0
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x - 2y 2z = 2 2x + 3y + z = 2 3x + 2y = 0
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x-3y - z = 0 -x + 2y + z = 5 3x - 4y - z = 1
In Problems 51–56, solve for x. 3 2 1 x 0 4 5 = 0 52 1 -2
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x + y z = = 6 3x - 2y + z = -5 x + 3y2z = 14
In Problems 51–56, solve for x. x 1 4 3 2 2 = -1 2 5
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. fbx + 3y = 2b +3 (bx + 2y = 2b + 2 b = 0
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x + 2y - 2x - 4y + z 4y + -2x + 2y3z = 4 z Z = -3 z = -7
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x = 2x - 5x + y - 2z y + z = 3y + 4z 3y + 4z = -4 -15 12
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. -x+y+ z=-1 у+ -x + 2y - 3z + = -4 3x-2y - 7z = 0
In Problems 51–56, solve for x. x 2 3 1 x 0 = 7 6 1 -2
In Problems 19–56, solve each system of equations. If the system has no solution, state that it is inconsistent. x + 4y3z: = -8 3x - y + 3z 12 x + y + 6z 1 ||
In Problems 51–56, solve for x. x 1 1 0 1 2 x x 3 2 - 4x
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 2x + y y = 7 a ax + ay = 5 a 0
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x - 3y z = 0 3x + 2y + 2z = 2 x + 5y + 3z = 2
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. X - y + z = 4 1 -2y+z - 2x - 3y = -4
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. x + 2z = 6 -x + 2y + 3z = -5 x - y = 6
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 6 3x - 2y + 2z = 7x-3y + 2z = -1 2х - 3у + 4z = 0
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. bx + 3y = bx + 2y = 14 10 b = 0
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x2y3z = 6 4x - 3y + 2z = 0 -2x + 3y - 7z = 1
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + 3x - 2y y - z = 6 = -5 + 2y + x + 3y2z = 14 z z
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x = y + z = 2x - 3y + 4z = 5x + y = 2z -4 -15 12
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. x + 2z -x + 2y + 3z X- || || y = N NIW N 3 2 2
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. X- y + z = 2 -2y+z= -2x - 3y || 2 1 2
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + 4y 3x - x + 3z = -8 12 1 y + 3z = y + 6z
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + 2y - z = -3 2x - 4y + z = -7 -2x + 2y3z = 4
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2 3 2x = y + z = 1 8 3 3x + y - 4x + z 2y
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x+y+z+w= 4 2x = y + z = - 0 3x + 2y + z-w= 6 2y 2z2w =
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x+y+z+ w = -x + 2y + z = 2x + 3y + z W = -2x + y 2z +
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. x + y + z = 3x + 2y - Z 3x + y + 2z || || 2 Nim 7 3 10 3
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + y = 1 2x = y + z = 1 x + 2y + z: || 00 | دا 3
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + 2y z = 3 2xy + 2z = 6 x - 3y + 3z = 4
In Problems 45–64, use the inverses found in Problems 35–44 to solve each system of equations. 3x + 3y + z = 1 x + 2y + z = 0 2x = y + z y +z = 4
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. [x = y + z = 5 (3x + 2y 2z = 0
In 2017 there was a total of 469 commercial and noncommercial orbital launches worldwide. In addition, the number of noncommercial orbital launches was 31 more than half the number of commercial
In Problems 65–70 show that each matrix has no inverse. -3 1 1 -1 -4 -7 5 12
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x + 2y + z = 1 2xy + 2z = 2 3x + y + 3z = 3
In Problems 65–70 show that each matrix has no inverse. -3 0 40
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. z = 3 z = 0 2x + 3y y x -x + y + z = 0 x + y + 3z = 5
A chemist wants to make 14 liters of a 40% acid solution. She has solutions that are 30% acid and 65% acid. How much of each must she mix?
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 2x + y z = 4 - -x + y + 3z = 1
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. x - 3y + z = 1 2x y 4z = 0 x - 3y + 2z = 1 x - 2y = 5
A wireless store owner takes presale orders for a new smartphone and tablet. He gets 340 preorders for the smartphone and 250 preorders for the tablet. The combined value of the preorders is
In Problems 65–70 show that each matrix has no inverse. 1 2 -4 1 -3 1 1 25 -5 7
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. [4x + y + z = w = 4 xy + 2z + 3w = 3
In Problems 39–74, solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. - 4x + y = 5 zw=5 z+w = 4 2x - y + z
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
In Problems 79–86, solve each system of equations using any method you wish. -4x + 3y + 2z = 3x + y - x + 9y + 6 z = -2 6 z 2 =
Nikki and Joe take classes at a community college, LCCC, and a local university, SIUE. The number of credit hours taken and the cost per credit hour (2018–2019 academic year, tuition and
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
In Problems 79–86, solve each system of equations using any method you wish. 3x + 2y - 2x + y + 2x + 2y z = 2 6z = -7 14z = 17
In Problems 79–86, solve each system of equations using any method you wish. 2x - 3y + z = 4 -3x + 2yz = -3 - 5y + z = 6
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.List
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Graph
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam. The
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.The
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam. If
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 70–77 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
A movie theater charges $11.00 for adults, $6.50 for children, and $9.00 for senior citizens. One day the theater sold 405 tickets and collected $3315 in receipts. Twice as many children’s tickets
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 91–100 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.Find
Problems 94–101 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 104–111 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 104–111 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 104–111 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final exam.
Problems 104–111 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Problems 104–111 are based on material learned earlier in the course. The purpose of these problems is to keep the material fresh in your mind so that you are better prepared for the final
Use the remainder theorem to decide whether the given number is a solution of the equation. x³ 3x²x+10=0; x = -2

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