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39/1.5 = 26 km per hour
51/3 = 17 km per hour
Then you need the mean. 26+17/2 = 21.5 km per hour
The decimal form is x=1.2 and the mixed number is x= 1 1/5
Answer:
(g-f)x is the answers for the question
Step-by-step explanation:
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Answer:
18
Step-by-step explanation:
180-160 = 20 which equals the exterior angle
the sum of exterior angles is 360 so 360/20 = the number of sides as there is an exterior angle for every side
360/20 = 18
