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Maths Puzzle
Numerical Ability
the value of a building lot this year is $78,000. this is three times its value 18 years ago. find its value 18 years ago.
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book Other Question
3a-2b+7c=13
a+8b-6c=-47
7a-9b-9c=-3
find a,b, and c
THX
How do you find the area of a quadrilateral with no even sides? an example is ten by 9.9 by 4.5 by 9. please give this back as soon as possible.