Answer:
A=-2
B=-8
Step-by-step explanation:
In order for the system of linear equations to have infinitely many solution, they must be the same equation.
Ax-y=8
2x+y=B
We need to choose A and B so they are the same equation.
I notice they are both in the same form but in the second column you have opposites;
the -y and y.
So im going to multiply either equation by -1 so that part is exactly the same.
Don't choose both; choose only one.
Let's multiply the first equation by -1.
Doing this gives us the following:
-Ax+y=-8
2x+y=B
So now we can choose A and B so these equations appear exactly the same.
We need -A=2 and B=-8.
-A=2 implies A=(opposite of 2) which is -2.
Conclusion:
A=-2
B=-8
20 miles/2 hours = 10 miles/1 hour, therefore her average speed is 10mph
Answer:
try option D that should be correct
Step-by-step explanation:
Answer:
Here are your answers!
Step-by-step explanation:
1. The Two Rectangles Because Rectangles Are The Longest Shape In This Question.
2. You will have to draw it yourself i cannot draw on brainly.
3. Draw Again.
4. Draw Again..
5. Perimeter.
6. Rectangle
7. Rectangle because it's more longer so more people can sit with 1 table.
8. It would be a rectangle because they are sitting across from one another so they can talk face to face. The Circle is a good one to everyone is close and it's decorative.
