-4x + 7y = -8 . . . (1)
-5x + 6y = 1 . . . .(2)
(1) x 5 => -20x + 35y = -40 . . . (3)
(2) x 4 => -20x + 24y = 4 . . . . .(4)
(3) - (4) => 11y = -44 => y = -44/11 = -4
From (2), -5x + 6(-4) = 1 => -5x - 24 = 1 => -5x = 1 + 24 = 25 => x = 25/-5 = -5
Therefore, x = -5, y = -4
Answer:
(0.0)
(1,2.75)
A line that goes through the origin represents a proportional relationship. Since the line passes through zero-zero, it means that the relationship between the number of notebooks and the cost is proportional The unit rate is represented by the point one-y. The point one, two and seventy-five hundredths represents the unit rate, which means each notebook costs two dollars and seventy-five cents.
Answer:
5. A
6. B
7. A
Step-by-step explanation:
Answer:
A. Mutually exclusive
Step-by-step explanation:
We are given that
Event A={2,4,6}
Event B={1,3,5}
Event A and B=A∩B={2,4,6}∩{1,3,5}={}
As events A and B have no outcome in common, so it means that event A and B are mutually exclusive events.
We can say that event A and event B are not non-mutually exclusive.
Simple events are those which have only one outcome like {1} or {2} etc.
Thus, we conclude that event A and event B are mutually exclusive events.
