C - (0.40c - 0.15) - (0.60c - 0.20)
I hope this helps :)
Answer:
D
Step-by-step explanation:
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➷ r = k/v^2
Substitute the values in:
120 = k/1^2
Multiply both sides by 1^2 to find k
k = 120
Substitute new values in:
r = 120/10^2
Solve:
r = 1.2
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