Answer:I guess 6 ft as you gave same options
Step-by-step explanation:
Answer:
x³ + 5x² + 5x - 2
Step-by-step explanation:
Given
x³ + 3x² - x + 2x² + 6x - 2 ← collect like terms
= x³ + (3x² + 2x² ) + (- x + 6x ) - 2
= x³ + 5x² + 5x - 2
Well there has to be a right angle in there somewhere as the pole must be perpendicular to the ground.
Using the sine rule:
sinA/a = sinB/b where a = 10, A = 90, b = 5√3, B = B
Re-arrange for B, B = arcsin (b(sinA)/a)
B = arcsin(5√3(sin90)/10)
B = 60 degrees.
Answer is C
You have sqrt(8), sqrt(18), and sqrt(2).
You need to simplify the radicals.
sqrt(2) is already simplified.
For both sqrt(8) and sqrt(18), you need to factor out the greatest perfect square.
8 = 4 * 2
You can take the square root of 4 and put it outside the root.
18 = 9 * 2
You can take the square root of 9 and put it outside the root.
![5 \sqrt{8} - \sqrt{18} -2 \sqrt{2} =](https://tex.z-dn.net/?f=%205%20%5Csqrt%7B8%7D%20-%20%5Csqrt%7B18%7D%20-2%20%5Csqrt%7B2%7D%20%3D%20)
![= 5 \sqrt{4 \times 2} - \sqrt{9 \times 2} -2 \sqrt{2}](https://tex.z-dn.net/?f=%3D%205%20%5Csqrt%7B4%20%5Ctimes%202%7D%20-%20%5Csqrt%7B9%20%5Ctimes%202%7D%20-2%20%5Csqrt%7B2%7D%20)
![= 5 \times 2\sqrt{2} - 3 \sqrt{2} -2 \sqrt{2}](https://tex.z-dn.net/?f=%3D%205%20%5Ctimes%202%5Csqrt%7B2%7D%20-%203%20%5Csqrt%7B2%7D%20-2%20%5Csqrt%7B2%7D%20)
![= 10\sqrt{2} - 3 \sqrt{2} -2 \sqrt{2}](https://tex.z-dn.net/?f=%3D%2010%5Csqrt%7B2%7D%20-%203%20%5Csqrt%7B2%7D%20-2%20%5Csqrt%7B2%7D%20)