Y = x - 3 y = -7 solve the system of equations by subtraction
2 answers:
You might be interested in
Hello! :)
Step-by-step explanation:
<u><em>Therefore, the slope is -1/3.</em></u>
<u><em>-1/3 is the final answer.</em></u>
Hope this helps!
Have a nice day! :)
:D
-Charlie
Thank you!
Answer:
Pies=$0.85
Donuts= $1.20
Step-by-step explanation:
In the equation let p stand for the number of pies and d stand for the number of donuts.
To solve this set up 2 equations, one representing bill and the other representing Mary Ann.
- Bill's equation is 5p+7d=$12.65.
- Mary Ann's equation is 6p+6d=$12.30
Then solve using a system of equations. Systems of equations can be solved using elimination or substitution. I will use substitution. Solve bill's equation for p. This gives you . Then, you can substitute that into Mary Ann's equation. This looks like
. Solve for d. Once you solve d=1.20. Finally, substitute 1.20 back into either Bill's or Mary Ann's for d and solve for p. No matter which equation you use p=0.85.