Isabella drove 600m.
Mia drove 300 more than Isabella=(600+300)m
=900m.
David drove=8.5km=8500m
Therefore, Distance David drove in meters combined of both distances of Mia and Isabella =[8500-(600+900)]m
=(8500-1500)
=7000 meters or 7 km.
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X-3=14
+3 +3
x=17
x-3=-14
+3 +3
x=-11
(4-3n-5n2)
+( -2+n-3n2)
____________________
-2-2n-8n2
Answer:
They are quadrilaterals that have opposite sides equal in length.
2x+6 = 20
take 6 from both sides
2x = 14
divide by 2 on both sides
x = 7