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:
7.77 7.78 7.8 7.87 7.88
Step-by-step explanation:
The answer for this problem is 120√6
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Need a better picture please so I can help