Circumference of a circle is 2(pi)(r)
2(3.14)(7)= 43.96
So the answer is B
1. w= 52
2. x= 5
3. n=1.4
4. x= -28/9 or x=-3.1
Answer:
x = 1/20 y^2
Step-by-step explanation:
This is a rightward opening (sideways ) parabola
Directrix = x = -5
Distance formula form point x,y to directrix and focus are equal:
(x - -5)^2 = (x-5)^2 + y^2
x^2 + 10x + 25 = x^2 - 10x + 25 + y^2
20x = y^2
x = 1/20 y^2
Answer:
19
Step-by-step explanation:
