4 nickles
Explanation:
80=N+D
7.80=0.05N + 0.1D
D=80-N
7.80=0.05N + 0.1(80-N)
7.80=0.05N + 8 - 0.1N
0.1N + 7.80 = 8 + 0.05N
0.05N = 8-7.80
0.05N = 0.2
N= 4
Answer:
2pi/C = 45/360
Step-by-step explanation:
L = arc length
C = circumference
x = central angle
Tying those three variables together leads us to this
L = (x/360)*C
The idea is we effectively take a fraction of the circumference to end up with the arc length.
In the formula above, we can rearrange terms to get
L = (x/360)*C
360L = Cx
L/C = x/360
We know that L = 2pi and x = 45, which means we end up with
L/C = x/360
2pi/C = 45/360
Answer:
C
Step-by-step explanation:
Answer:
4pi
Step-by-step explanation:
Circle circumference = 2*pi*r
2*pi*2
4*pi