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Elodia [21]
3 years ago
14

Find the length of the missing side.

Mathematics
1 answer:
Sonja [21]3 years ago
8 0
Hi! We’re going to use the pythagorean theorem to answer this.

3 + x^2 = 8
subtract 3 from 8
x^2=5
take the square root of both sides
x=sqrt5
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To find where the inequality is true, we use a sign test. When x-5 > 0, it means x >5, and 5 is one of our sign test values. Similarly, -2 is the other. We can then make three intervals - A (less than -2), B (between -2 and 5), and C (more than 5).

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{x : x < -2 or x > 5} is also how it's said in set notation.

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