Answer:
yes she did
Step-by-step explanation:
A and b are the minutes spent on machine A and machine B, respectively.
a+b = 40
b = 40-a
8a + 6b = 300
8a + 6(40-a) = 300
8a + 240 - 6a = 300
2a = 60
a = 30
b = 40-a = 10
30 minutes on machine A and 10 minutes on machine B
I think the answer here is a :)
Answer:
-7/5
Step-by-step explanation:
5/7
= -7/5
