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Mathematics 51 Online
OpenStudy (sparklestaraa):

Which of the following is not equivalent to the formula for the area of a rectangle A = LW?

OpenStudy (sparklestaraa):

OpenStudy (danjs):

A = L x W

OpenStudy (danjs):

Play around with that euation

OpenStudy (danjs):

example - Divide both sides by W \[\frac{ A }{ W } = L\]

OpenStudy (danjs):

That crosses the second one off... Divide that now by L to get... \[\frac{ A }{ W*L } = 1\] That crosses off the fourth one..

OpenStudy (danjs):

Try to rearrange A = L x W into \[\frac{ A }{ L } = W ~~~and~~~A=\frac{ L }{ W }\] Which one is possible, and which one isnt?

OpenStudy (sparklestaraa):

C

OpenStudy (sparklestaraa):

c is possible and a is not

OpenStudy (sparklestaraa):

no c is possible

OpenStudy (danjs):

\[A = L*W ~~~~divide~ by~L~~~~~~\frac{ A }{ L } = W\]

OpenStudy (danjs):

C is not possible , they give you A = L x W, how can A = L/W

OpenStudy (danjs):

To get A) Divide by L on both sides To get B) Divide by W on both sides To get D) Divide both sides by L and W C) not possible

OpenStudy (sparklestaraa):

ohhh i thought u asked how i thought c was not possible sorry didn't mean it like ur wrong :P

OpenStudy (sparklestaraa):

@DanJS

OpenStudy (sparklestaraa):

so A is right?

OpenStudy (danjs):

C is the one that is Not possibe

OpenStudy (danjs):

You cant get A=L / W from A = L x W

OpenStudy (danjs):

all the others you can,, as i did above

OpenStudy (danjs):

A = L * W -----Divide both sides by L \[\frac{ A }{ L } = \frac{ W*L }{ L }\]\[\frac{ A }{ L } = W\] So the first answer is possible.

OpenStudy (danjs):

To get A) Divide by L on both sides To get B) Divide by W on both sides To get D) Divide both sides by L and W C) not possible

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