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son4ous [18]
3 years ago
9

If AB is parallel to CD, which statement must be true

Mathematics
2 answers:
Contact [7]3 years ago
8 0
AB and CD do not intersect.

HOPE it helps!!!!!!
sdas [7]3 years ago
5 0
If ab and cd are parallel they are the same

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Element X decays radioactively with a half life of 9 minutes. If there are 890 grams of Element X, how long, to the nearest tent
elena-s [515]

Answer:

13.18651685

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Explain:

890-238=652
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0.7325842697x18=13.18651685

As you see 18/13.18651685 will equal to 18 (not exactly since it is rounded)

And of course we need to round it to nearest tenth. So the answer would be 13.9!

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Aneli [31]

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It's the last choice:

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