SOLUTION: if my equation is d-xy what is the avreage speed of 45 and 65 mph?

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Question 348799: if my equation is d-xy what is the avreage speed of 45 and 65 mph?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
if my equation is d-xy what is the avreage speed of 45 and 65 mph?
d-xy is not an equation.
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The average of 45 & 65 = (45 + 65)/2 = 55 mph