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A. Hussein
Rewrite this expression using addition,
3-(-3)

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Simplify using positive exponents only.

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)