shannyn49
Answered

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The width of a rectangle is 1units less than the length. The area of the rectangle is 42 units

The Width Of A Rectangle Is 1units Less Than The Length The Area Of The Rectangle Is 42 Units class=

Sagot :

Answer:

Step-by-step explanation:

w=l-1

∵A=l×w

∴A=l×(l-1)

⇒42=l²-l

⇒l²-l-42=0 (After subtracting 42 from both sides)

Two factors of 42 that add to give negative 1 :-7+6

∴ (l-7)(l+6)=0

∴ l=7 or l=-6

but remember that length is a scalar quantity, hence l≠6 but l=7.

I hope this helped you solve this math problem and made you better understand

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