i think the answer is 8
bc the small one is 4 and the big one is 6
and the other one is 6 so it must be 8
Answer:think of many situations you can come up with or problems you can solve which will end up with the same answer if u use different methods
Step-by-step explanation:
Complementary angels add up to 90°
so x+18°=90°
so x=90-18=72°
Answer: C) All real values of x such that ![x \le 0](https://tex.z-dn.net/?f=x%20%5Cle%200)
In other words, x must be 0 or smaller.
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Explanation:
The reason why is because we must make the stuff under the square root to never be negative. We must make -2x be 0 or larger.
So,
![-2x \ge 0 \\\\-2x+2x \ge 0+2x \ \text{ ... add 2x to both sides}\\\\0 \ge 2x\\\\2x \le 0 \ \text{ ... flip both sides, and the inequality sign}\\\\x \le 0/2 \ \text{ ... divide both sides by 2}\\\\x \le 0](https://tex.z-dn.net/?f=-2x%20%5Cge%200%20%5C%5C%5C%5C-2x%2B2x%20%5Cge%200%2B2x%20%5C%20%5Ctext%7B%20...%20add%202x%20to%20both%20sides%7D%5C%5C%5C%5C0%20%5Cge%202x%5C%5C%5C%5C2x%20%5Cle%200%20%20%5C%20%5Ctext%7B%20...%20flip%20both%20sides%2C%20and%20the%20inequality%20sign%7D%5C%5C%5C%5Cx%20%5Cle%200%2F2%20%20%5C%20%5Ctext%7B%20...%20divide%20both%20sides%20by%202%7D%5C%5C%5C%5Cx%20%5Cle%200)
As an example, if x = -2, then -2x = -2(-2) = 4 is positive. Applying the square root to a positive number is valid.
But if x = 5, then -2x = -2*5 = -10 is under the square root, which is not allowed.