exam
Maths Puzzle
Numerical Ability
x2+5x=40-x
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exam Other Question
Li Nguyen invested some money at 3% and $4000 less than that amount at %5. The two investments produced a total of $200 interest in 1 yr. How much was invested at each rate?
A rectangular box is(3x+7) feet wide, (6x + 3) feet long, and (7x-1)feet high.
Find the volume of this box./
Please help me with this one,I tried to do it.
V=LWH
V=(6x+3)(3x+7)(7x-1)
126x-21
Thank you