Answer:
C. c^2=a^2+b^2-2abcos(90°)
Step-by-step explanation:
This is the law of cosine.
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Step-by-step explanation:
The correct answer is 5i
4x + 6 < -6
First, subtract 6 from both sides. / Your problem should look like: 3x < -6 - 6
Second, simplify -6 - 6 to -12. / Your problem should look like: 3x < -12
Third, divide both sides by 4. / Your problem should look like: x <
Fourth, simplify

to 3. / Your problem should look like: x < -3
Answer:
x < -3<span />
Answer:
1. 81
2. 4 (square root of) 25^3
3. 30 (square root of) 10