Mathematics

Mathematics, 29.06.2019 23:30, lainnn974

(05.02 mc) what is the value of the x variable in the solution to the following system of equations? (5 points) 2x − 3y = 3 5x − 4y = 4 −1 0 x can be any number as there are infinitely many solutions to this system there is no x value as there is no solution to this system

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Mathematics, 07.07.2019 13:30, MegRasmussen31

Take test: 7.02 systems of equations quiz question 1 a system of equations that has at least one solution is called inconsistent. true false 2 points question 2 does the following system of equations have a solution? graph of lines y equals 2 x minus 5 and y equals negative 3 x plus 1 yes no 2 points question 3 what is the approximate solution of the following system of equations? graph of lines y equals negative x minus 5 and y equals x plus 9 (2, -7) (-7, 2) (7, 2) (-7, -2) 2 points question 4 solve the following system of equations by using the substitution method. x – y = 3 2x + 2y = 2 (3, 4) (-4, 5) (2, -1) inconsistent 2 points question 5 solve the following system of equations by using the substitution method. y = 6x – 11 -2x – 3y = -7 (1, 2) (2, 1) (-3, 1) (2, 4) 2 points question 6 solve the following system of equations by using the elimination method. x + y = 4 2x + 3y = 9 (3, 1) (-2, 1) (3, -1) inconsistent 2 points question 7 solve the following system of equations by using the elimination method. -4x – 2y = -12 4x + 8y = -24 (5, 3) (-6, -6) (3, 1) (6, -6) 2 points question 8 solve the following system of equations using matrices. 3x – 2y = 31 3x + 2y = -1 (5, -8) (3, 5) (-3, 9) (2, 8) 2 points question 9 solve the following system of equations using matrices. y = 2x – 1 6x – y = 13 (3, 5) (-3, 5) (5, 0) inconsistent 2 points question 10 a laboratory employee is mixing a 10% saline solution with 4% saline solution. how much of each solution is needed to make 500 milliliters of a 6% solution. 170 milliliters of the 10% solution and 340 milliliters of 4% solution 167 milliliters of the 10% solution and 333 milliliters of 4% solution 110 milliliters of the 10% solution and 210 milliliters of 4% solution 155 milliliters of the 10% solution and 300 milliliters of 4% solution 2 points

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Mathematics, 14.07.2019 22:30, cman8228

(05.02) a system of equations is shown below: 5x + 2y = 3 (equation 1) 2x − 3y = 1 (equation 2) a student wants to prove that if equation 2 is kept unchanged and equation 1 is replaced with the sum of equation 1 and a multiple of equation 2, the solution to the new system of equations is the same as the solution to the original system of equations. if equation 2 is multiplied by 1, which of the following steps should the student use for the proof? (4 points) select one: a. show that the solution to the system of equations 7x − y = 4 and 2x − 3y = 1 is the same as the solution to the given system of equations b. show that the solution to the system of equations 2x + 5y = 3 and 3x − 2y = 1 is the same as the solution to the given system of equations c. show that the solution to the system of equations 9x + 4y = 5 and 7x − y = 4 is the same as the solution to the given system of equations d. show that the solution to the system of equations −4x + 9y = 5 and 2x − 3y = 1 is the same as the solution to the given system of equations

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Mathematics, 27.10.2019 01:43, maehardy4134

Pl i need it i'll give you brainlist : (1. create an equivalent system of equations using the sum of the system and the first equation.−5x + 4y = 84x + y = 2a. −5x + 4y = 89x + 5y = 10b.−5x + 4y = 8−x + 5y = 10c. −5x + 4y = 89x + 5y = 2d.−5x + 4y = 8−x + y = 102. find an equivalent system of equations for the following system: x + 2y = 2−4x + 4y = −8a. x + 2y = 2−4x − 2y = 10b. x + 2y = 25x + 4y = 8c. x + 2y = 25x − 2y = 10d. x + 2y = 25x − 2y = −83.choose a system of equations with the same solution as the following system: 6x + 2y = −63x − 4y = −18a.8x + 4y = −417x + 2y = −28b.12x + 4y = 1221x + 2y = −36c.6x + 8y = −3615x + 6y = −60d.6x + y = 1515x − y = −94.a system of equations is shown: 5x + 2y = 3 (equation 1)2x − 3y = 1 (equation 2)4.a student wants to prove that if equation 2 is kept unchanged and equation 1 is replaced with the sum of equation 1 and a multiple of equation 2, the solution to the new system of equations is the same as the solution to the original system of equations. if equation 2 is multiplied by 1, which of the following steps should the student use for the proof? a.show that the solution to the system of equations 7x − y = 4 and 2x − 3y = 1 is the same as the solution to the given system of equations.b.show that the solution to the system of equations 2x + 5y = 3 and 3x − 2y = 1 is the same as the solution to the given system of equations.c.show that the solution to the system of equations 9x + 4y = 5 and 7x − y = 4 is the same as the solution to the given system of equations.d.show that the solution to the system of equations −4x + 9y = 5 and 2x − 3y = 1 is the same as the solution to the given system of equations.5.given the following system of equations: −4x + 8y = 162x + 4y = 32what action was completed to create this new equivalent system of equations? −2x + 4y = 82x + 4y = 32a.divide the second equation, 2x + 4y = 32, by 2.b.divide the first equation, −4x + 8y = 16, by 2.c.multiply the second equation, 2x + 4y = 32, by −1.d.multiply the first equation, −4x + 8y = 16, by −1.6.explain how system 1 becomes equivalent to system 2.system 1: lx + my = nax + by = csystem 2: (l − a)x + (m − b)y = n − clx + my = na.the first equation in system 2 is the sum of the equations in system 1. the second equation in system 2 is the first equation in system 1.b.the first equation in system 1 is the difference of the equations in system 2. the second equation in system 1 is the first equation in system 2.c.the first equation in system 2 is the difference of the equations in system 1. the second equation in system 2 is the first equation in system 1.d.the first equation in system 1 is the sum of the equations in system 2. the second equation in system 1 is the first equation in system 2.7. choose an equivalent system of equations to the following system: fx + gy = hqx + ry = sa.5fx + 5gy = 5hqx − ry = sb.5fx + gy = 5hqx + 5ry = sc.5fx + 5gy = 5hqx + ry = sd.fx + 5gy = 5hqx + ry = s8. given the following system of equations: 3x + 5y = 30x + 3y = 10which action creates an equivalent system that will eliminate one variable when they are combined? a. multiply the second equation by −1 to get −x − 3y = −10.b. multiply the second equation by −3 to get −3x − 9y = −30.c. multiply the first equation by −1 to get −3x − 5y = −30.d. multiply the first equation by −3 to get −9x − 15y = −90.9. two systems of equations are shown: system a system b2x + y = 5 −10x + 19y = −1−4x + 6y = −2 −4x + 6y = −2which of the following statements is correct about the two systems of equations? a. they will have the same solutions because the first equation of system b is obtained by adding the first equation of system a to 2 times the second equation of system a.b. they will have the same solution because the first equation of system b is obtained by adding the first equation of system a to 3 times the second equation of system a.c. the value of x for system b will be −5 times the value of x for system a because the coefficient of x in the first equation of system b is −5 times the coefficient of x in the first equation of system a.d. the value of x for system a will be equal to the value of y for system b because the first equation of system b is obtained by adding −12 to the first equation of system a and the second equations are identical.

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