The standard equation of a circle is (x-h)²+(y-k)²=r², (h,k) are the coordinates of the circle, r is the radius.
In this case, the x coordinate of the circle is -20, the y confidante of the center is 30, and the radius is 15.
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.
Y=-4+3x is different because all others have a negative 4 AND a -3x
Answer:
square on the side - 7
first square on top 3
last square 10
Step-by-step explanation: