Answer:I would add 3x on both sides because it would allow you to have a positive variable saving you time and effort.
Step-by-step explanation:7=7x-9
Answer:
/_ 12 is the angle of depression from the firefighter to the second story window.
Step-by-step explanation:
Hope it helps!
<em>#CarryOnLearning</em><em> </em>
Answer: v = u= ![2 \sqrt{2}](https://tex.z-dn.net/?f=2%20%5Csqrt%7B2%7D)
Step-by-step explanation:
v= cos45 * 4= ![2 \sqrt{2}](https://tex.z-dn.net/?f=2%20%5Csqrt%7B2%7D)
- Apply Pythagorean theorem
= ![(2\sqrt{2}) ^{2} + u^{2}](https://tex.z-dn.net/?f=%282%5Csqrt%7B2%7D%29%20%5E%7B2%7D%20%2B%20u%5E%7B2%7D)
We have u = ![2 \sqrt{2}](https://tex.z-dn.net/?f=2%20%5Csqrt%7B2%7D)
X^2 = 81...take the square root of both sides, eliminating the ^2
x = (+-) sqrt 81
x = (+-) 9
answers are : -9 and 9
Answer:
<h2>
231</h2>
Step-by-step explanation:
![3 + jk +k^3\\ j = 2 \\ k = 6](https://tex.z-dn.net/?f=3%20%2B%20jk%20%2Bk%5E3%5C%5C%20j%20%3D%202%20%5C%5C%20k%20%3D%206)
Substitute values into the given equation
![3 + 2(6)+(6)^3 \\ 3 + 12+216 \\ = 231](https://tex.z-dn.net/?f=3%20%2B%202%286%29%3C%2Fstrong%3E%3Cstrong%3E%2B%3C%2Fstrong%3E%3Cstrong%3E%28%3C%2Fstrong%3E%3Cstrong%3E6%3C%2Fstrong%3E%3Cstrong%3E%29%3C%2Fstrong%3E%3Cstrong%3E%5E%3C%2Fstrong%3E%3Cstrong%3E3%3C%2Fstrong%3E%3Cstrong%3E%20%5C%5C%203%20%2B%2012%3C%2Fstrong%3E%3Cstrong%3E%2B%3C%2Fstrong%3E%3Cstrong%3E2%3C%2Fstrong%3E%3Cstrong%3E1%3C%2Fstrong%3E%3Cstrong%3E6%3C%2Fstrong%3E%3Cstrong%3E%20%5C%5C%20%20%3D%20%3C%2Fstrong%3E%3Cstrong%3E2%3C%2Fstrong%3E%3Cstrong%3E3%3C%2Fstrong%3E%3Cstrong%3E1%3C%2Fstrong%3E%3Cstrong%3E)