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OpenStudy (darleenie):
The length of a rectangular label is 2.5 cm less than twice the width. The perimeter is 40.6 cm. Find the width.
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OpenStudy (imaginaryduck):
17.8 cm
OpenStudy (raffle_snaffle):
what!??!?!?!?!
OpenStudy (imaginaryduck):
idk
OpenStudy (raffle_snaffle):
Explain plz. =)
OpenStudy (imaginaryduck):
ok
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OpenStudy (imaginaryduck):
the perimeter is 40.6 so I just doubled the length and subtracted it from the perimeter. After that I divided the difference in half.
OpenStudy (imaginaryduck):
I think i read the problem wrong. Hold on.
OpenStudy (darleenie):
I got 7.6cm
OpenStudy (raffle_snaffle):
P = 2(l + w) P = 2l + 2w 40.6cm = 2(2.5cm - 2w) + 2w
OpenStudy (raffle_snaffle):
Solve for w.
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OpenStudy (raffle_snaffle):
2.5 cm less than twice the width = 2.5cm - 2w
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