2x β 3y + 3z = 9
Mathematics, 14.10.2020 02:01 kratose
Solve the system of linear equations in three variables.
4x +y β 2z = 0
2x β 3y + 3z = 9
-6x-2y+z = 0
A. (-2, 1/2, 3/4)
B. (1/2, 3/4, -2)
C. (-2, 3/4, 1/2)
D. (3/4, -2, 1/2)
Answers: 2
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(50 ) mrs. julienβs and mrs. castillejoβs classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julienβs class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejoβs class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.
Answers: 1
Solve the system of linear equations in three variables.
4x +y β 2z = 0
2x β 3y + 3z = 9
2x β 3y + 3z = 9
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