3 years ago

What is 11. 7 -- - -- 12. 9

Mathematics

1 answer:

vesna_86 [32]3 years ago

4 0

Answer:

11.7= 11 7/10

12.9=12 9/10

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Answer:

The angles are: 50.3 and 129.7

Step-by-step explanation:

The sum of supplementary angles is 180°.

Let x be one angle then the other angle will be x+79.4

Using the supplementary angle sum

$x+x+79.4 = 180\\2x+79.4 = 180\\2x = 180-79.4\\2x = 100.6\\\frac{2x}{2} = \frac{100.6}{2}\\x = 50.3$

For the measurement of 2nd angle

x+79.4 => 50.3+79.4 => 129.7

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The angles are: 50.3 and 129.7

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What is 11. 7 -- - -- 12. 9​

What is 11. 7 -- - -- 12. 9