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allsm [11]
3 years ago
10

Can someone tell me what x and y would be

Mathematics
1 answer:
TEA [102]3 years ago
5 0

Step-by-step explanation:

20°+120°+I°=180°

I=40°

using sine rule,

I/sin I=x/sinX

12/sin40=x/sin20

x=12sin20/sin40

x=6.4

using similarly and enlargement,

we have, cw/cp=y/120

8/12=y/120

y=80°

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David is making patterns using these rules. Rule for Pattern A: start with 20 and subtract 2 Rule for Pattern B: start with 10 a
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Answer:

20,18,16,14,12,10,8,6,4,2

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Step-by-step explanation:

Pattern A:

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Pattern B:

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Pattern 1:

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