exam Maths Puzzle Numerical Ability

if tory averaged 52 mph on state highways and 62 mph on interstate highways on her 450 mile trip and her driving time was 7 hours and 45 minutes, how long did she travel on interstate hightway and how many miles did she travel on state highways?

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exam Other Question

Graph the trianlge ABC if it has the vertices A(8,6) B(-4,1) and C(2,-6) graph the triangle. Find the coordinates of J if AJ is a median of triangle ABC. If N has the coordinates (3,-4) is BN an altitude of triangle ABC? 2 cubed-root(a^2) / (square-root of 8a)... Im Having trouble with this problem. -thx for your help