Answer:
Circumference = 2(pi)r
C = 2*3.14*4.0= 25.12 round 25.10 m
Step-by-step explanation:
If you want to cheat, paste the formula in Wolfram Alpha. However, this one is not that difficult. From the fact that x and y are squared you can infer that this is a circle. The 9 reveals that the radius r^2 is 9, so radius is 3.
The (x-2) tells us that the circle is shifted to the right by 2. Likewise, y+1 shifts it down by one. So the center is at (2,-1). If the equation would be x^2 + y^2 = 9, you'd have a circle exactly on the origin.
Hopefully this helps you break down the equation and pick the right picture!
Answer:
3
Step-by-step explanation:
18 -15 = 3
Answer:a b d
Step-by-step explanation:
