exam Maths Puzzle Numerical Ability

HG and EF are bases, HI-height,

If HG=14, HI=2x+2, EF=4x+4, area=170, find x, HI, and EF.

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exam Other Question

Write an equation for the line that passes through (-2,1) and (7,-3) Ninety liters of pure maple syrup that costs $8.00 per liter are mixed with imitation maple syrup that costs $2.80 per liter. How much imitation maple syrup is needed to make a mixture to sell for $5.14 per liter?