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gladu [14]
2 years ago
8

Change 400cm into mm​

Mathematics
2 answers:
vichka [17]2 years ago
8 0

Answer:

mate...

cm to mm is by multiplying 10

400 * 10 = 4000mm

brainliest l m a o

sashaice [31]2 years ago
5 0

Answer:

4,000mm

Step-by-step explanation:

I tryed my best

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Area=1/2 times base times height
note:bh=base times height

a=1/2bh
b=width

h=-4+2w
h=2w-4
subsitute
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a=1/2(2s^2-4w)
a=w^2-2w
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63=w^2-2w
subtract 63 from both sdies
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factor
find what 2 numbers multiply to get -63 and add to get -2
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width=9

subsitute
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l=2(9)-4
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legnth=14 in
width/base=9 in
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