exam Maths Puzzle Numerical Ability

slove each of the following systems by graphing.

2x-y=4
2x-y=6

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exam Other Question

3 (fourth root of (48x^42y^52))

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lisa les and gil drove a total of 733 miles in 11.6 hours. les drove the first part of the trip and averaged 55 mph. gil drove the remainder of the trip and averaged 65 mph. how long did les drive?