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Maths Puzzle
Numerical Ability
Write in simplified radical form by rationalizing the denominator.
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Ö</font>3 - 2
—————</u>—————
-5Ö</font>3 + 8</PRE>
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Lynn, a chemist, mixed 40 mL of 8% hydrochloric acid with 60 mL of 12% hydrochloric acid solution. She used a portion of this solution and replaced it with distilled water. If the
When using substitution...
x+5y=4
3x+15y=-1
My answer was (-1,-1) Is that right?
Thanks