I need someone who's really good at math and can solve Systems of Equations with Three Variables and Word Problems
can pay with RSGP if the answers are right
Question 1
Solve x + 10y – 2z = 20
5x – 3y + 4z = 8
2x + y = 6
A) (20, 8, 6)
B) (4, -2, 5)
C) (2, 2, 1)
D) (2, 4, -1)
Question 2
Solve 2x + y – z = 3
4x – y + 4z = 0
-3y + 2z = 6
A)(2, -4, -3)
B)(-2, 4, 3)
C)(4, 2, -7)
D)(-4, -2, 7)
Question 3
Solve 3x – y + 2z = 6
-x + y = 2
x – 2z = –5
A)(-1, -3, -3)
B)(1, 3, 3)
C)(1, -3, -3)
D)(1, 3, -3)
Question 4
Solve 4x + y – 2z = 0
2x – 3y + 3z = 9
-6x – 2y + z = 0
A)(0, 9, 0)
B) (-3/4, 2, -1/2)
C)(0, -9, 0)
D) (3/4, -2, 1/2)
Question 5
Solve x = z – 2y
y = 3z – 24
x + y + z = 14
A) (0, 1, 2)
B)no solutions
C)(-2, 6, 10)
D)(-3, 6, 9)
Question 6
Solve –x + y + 2z = 2
2x – y + z = 5
-4x – y + 3z = 3
A)(2, 5, 3)
B)(0, 4, -1)
C)(1, -1, 2)
D)(-1, 1, -2)
Question 7
Solve x – 2y – 3z = 3
3x + y + z = 12
3x – 2y – 4z = 15
A)(0, 0, -1)
B)(3, 12, 15)
C)(3, 9, -6)
D)(-3, -9, 6)
Question 8
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times the third number is one more than the second number. The second number is equal to the sum of the first number and the third number. Find the three numbers.
A)1st number = -6, 2nd number = 3.5, 3rd number = 2.5
B)1st number = 8, 2nd number = 4, 3rd number = 1
C)1st number = -8, 2nd number = -4, 3rd number = -1
D)1st number = 6, 2nd number = 3.5, 3rd number = -2.5
Question 9
In a triangle whose perimeter is 44 centimeters, the length of the longest side is 4 cm less than the sum of the lengths of the other sides. Twice the length of the shortest side is 9 cm more than the difference between the lengths of the other sides. How long is each side of the triangle?
Answer
A)Longest side = 20 cm, Middle side = 19 cm, Shortest side = 5 cm
B)Longest side = 22 cm, Middle side = 18 cm, Shortest side = 4 cm
C)Longest side = 18 cm, Middle side = 17 cm, Shortest side = 9 cm
D)Longest side = 20 cm, Middle side = 18 cm, Shortest side = 6 cm
*You don't have to show work, but if you do that'd be really nice just so i know how you did it and stuff, but it's optional :b
you can also add me on Skype if that will help: MZ132613
can pay with RSGP if the answers are right
Question 1
Solve x + 10y – 2z = 20
5x – 3y + 4z = 8
2x + y = 6
A) (20, 8, 6)
B) (4, -2, 5)
C) (2, 2, 1)
D) (2, 4, -1)
Question 2
Solve 2x + y – z = 3
4x – y + 4z = 0
-3y + 2z = 6
A)(2, -4, -3)
B)(-2, 4, 3)
C)(4, 2, -7)
D)(-4, -2, 7)
Question 3
Solve 3x – y + 2z = 6
-x + y = 2
x – 2z = –5
A)(-1, -3, -3)
B)(1, 3, 3)
C)(1, -3, -3)
D)(1, 3, -3)
Question 4
Solve 4x + y – 2z = 0
2x – 3y + 3z = 9
-6x – 2y + z = 0
A)(0, 9, 0)
B) (-3/4, 2, -1/2)
C)(0, -9, 0)
D) (3/4, -2, 1/2)
Question 5
Solve x = z – 2y
y = 3z – 24
x + y + z = 14
A) (0, 1, 2)
B)no solutions
C)(-2, 6, 10)
D)(-3, 6, 9)
Question 6
Solve –x + y + 2z = 2
2x – y + z = 5
-4x – y + 3z = 3
A)(2, 5, 3)
B)(0, 4, -1)
C)(1, -1, 2)
D)(-1, 1, -2)
Question 7
Solve x – 2y – 3z = 3
3x + y + z = 12
3x – 2y – 4z = 15
A)(0, 0, -1)
B)(3, 12, 15)
C)(3, 9, -6)
D)(-3, -9, 6)
Question 8
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times the third number is one more than the second number. The second number is equal to the sum of the first number and the third number. Find the three numbers.
A)1st number = -6, 2nd number = 3.5, 3rd number = 2.5
B)1st number = 8, 2nd number = 4, 3rd number = 1
C)1st number = -8, 2nd number = -4, 3rd number = -1
D)1st number = 6, 2nd number = 3.5, 3rd number = -2.5
Question 9
In a triangle whose perimeter is 44 centimeters, the length of the longest side is 4 cm less than the sum of the lengths of the other sides. Twice the length of the shortest side is 9 cm more than the difference between the lengths of the other sides. How long is each side of the triangle?
Answer
A)Longest side = 20 cm, Middle side = 19 cm, Shortest side = 5 cm
B)Longest side = 22 cm, Middle side = 18 cm, Shortest side = 4 cm
C)Longest side = 18 cm, Middle side = 17 cm, Shortest side = 9 cm
D)Longest side = 20 cm, Middle side = 18 cm, Shortest side = 6 cm
*You don't have to show work, but if you do that'd be really nice just so i know how you did it and stuff, but it's optional :b
you can also add me on Skype if that will help: MZ132613
