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irga5000 [103]
3 years ago
7

How do you solve 7(7a-9)>84

Mathematics
1 answer:
timama [110]3 years ago
6 0

7(7a-9)>84

first multiple out to get rid of the parentheses

49a - 63 > 84

add 63 to both sides

49a > 147

Divide by 49 and flip the sign because when you divide a inequality you have to flip the sign

a < 3

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The exterior angle is the sum of the remote interior angles.

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<h3>setup</h3>

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<h3>solution</h3>

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<em>Additional comment</em>

Both the sum of interior angles and the sum of angles of a linear pair are 180°. If M represents the interior angle at vertex M, then we have ...

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Equating these expressions for 180° and subtracting M gives the relation we used above:

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This is also described by "supplements to the same angle are equal."

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