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Helga [31]
3 years ago
13

Hi please help thank you

Mathematics
1 answer:
jonny [76]3 years ago
7 0
20
This is because
2x+(6x+20)=180
8x+20=180
8x=160
8x/8=160/8
X=20

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Here are the first five terms of an arithmetic sequence. 2 6 10 14 18 Is 86 a term in the sequence? You must give a reason for y
AnnyKZ [126]

Answer:

86 is a term in the sequence

Step-by-step explanation:

2; 6; 10; 14; 18;.....

T1=1*4-2=2

T2=2*4-2=6

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T4=4*4-2=14

T5=5*4-2=18

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Tn=n*4-2

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n*4=88

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n=22

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3 years ago
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3 years ago
I don’t really understand what to do. So if anyone could help I’d be amazing.
Sonbull [250]

Answer:

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Step-by-step explanation:

Oh, this is one of those incredibly cool circle theorems!  You might like this page:

https://www.mathopenref.com/secantsintersecting.html

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3 years ago
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Answer:

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Answer:

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