exam
Maths Puzzle
Numerical Ability
Could you explain to me how to construct the equation of a parabola that has x-axis intercepts at (-2,0) and (4,0) ?
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Solve by elimination...
3x-y=21
2x+y=4
Eva invested a certain amount of money at 10% interest and $15oo more tahn that amount at 11%. Her total yearly interest was $795. How much did she invest at each rate?