Answer:
$12.50
Step-by-step explanation:
c is cat food d is dog food
3c + 4d = 43
3c + 6d = 54
subtract those to get
2d = 11
d = 5.50
3c + 2d = 3c + 22 = 43
3c = 21
c = 7
c+d = 7 + 5.50 = 12.50
The equation of a circle is: (x - h)² + (y - k)² = radius² where (h, k) is the center. Now just plug in your given information and simplify.
(x - 2)² + (y - 0)² = 9²
Your equation is:
(x - 2)² + y² = 81
Answer:
x = 15
5x + 55 = 2x +100, plug in 15 and they are equal
