2x + 7y = 28
Mathematics, 12.12.2020 16:40 momof7hardings
Which system of equations is equivalent to the following system?
4x + y = 4
2x + 7y = 28
A: 4x + y = 4
−2x − 7y = 28
B: 4x + y = 4
−8x − 28y = 112
C: −28x − 7y = −28
2x + 7y = 28
D: −8x − 2y = 8
2x + 7y = 28
Answers: 2
Mathematics, 21.06.2019 15:30
Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?
Answers: 3
Mathematics, 21.06.2019 19:00
What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2
Answers: 1
Which system of equations is equivalent to the following system?
4x + y = 4
2x + 7y = 28
2x + 7y = 28
Chemistry, 17.12.2020 01:00
Mathematics, 17.12.2020 01:00
History, 17.12.2020 01:00
Arts, 17.12.2020 01:00
Biology, 17.12.2020 01:00
Mathematics, 17.12.2020 01:00
English, 17.12.2020 01:00
Mathematics, 17.12.2020 01:00
English, 17.12.2020 01:00
Mathematics, 17.12.2020 01:00