Multiply 2nd equation by -1 and add to first one
3x-y=16
<u>-2x+y=-12 +</u>
1x+0y=4
x=4
sub back
2x-y=12
2(4)-y=12
8-y=12
minus 8 both sides
-y=4
times -1
y=-4
(x,y)
(4,-4)
Answer is B cause you have to minus the 20 then then swap the signs
Answer:
C) 2/9
Step-by-step explanation:
There are 9 total marbles in the bag and 2 are yellow.
Probability = (number of desired outcomes)/(number of total outcomes)
Here the desired outcome is pulling a yellow marble, there are 2 ways we can do that since there are 2 yellow marbles.
The total number of outcomes is 9 since there are 9 total marbles in the bag
Our fraction is 2/9
Answer:
Step-by-step explanation:
i'm assuming is A because the way this is presented is bad b is wrong and that is all i can gather