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Sergeu [11.5K]
2 years ago
11

Please help me with this #6

Mathematics
1 answer:
kirza4 [7]2 years ago
8 0

\text{First term,}~ a = 4,\\\\\text{Common difference,}~ d = 9-4 = 5\\\\\text{Nth term} = a + (n-1)  d\\\\~~~~~~~~~~~~~=4+(n-1)5\\\\~~~~~~~~~~~~~= 4+5n-5\\\\~~~~~~~~~~~~~= 5n-1\\\\\text{Hence. 80th term}~ = 5(80) -1 = 399

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HELP DUE TODAY!!!!!!
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Answer:

x° is 66°  

Step-by-step explanation:

From the given diagram, we have;

∠JIH = 105° Given

∠IDJ = 39° Given

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∠JID and ∠JIH are supplementary angles, by the sum of angles on a straight line

∴ ∠JID + ∠JIH = 180° by definition of supplementary angles

∠JID + 105° = 180° by substitution property

∠JID = 180° - 105° = 75° by angle subtraction postulate

∠JID = 75°

∠IDJ + ∠JID + ∠IJD = 180° by the sum of interior angles of a triangle

∠IJD = 180° - (∠IDJ + ∠JID)  = 180° - (39° + 75°) = 66° angle subtraction postulate

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∠x° = 66°  

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3 years ago
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Answer:

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