I just need help with this
1 answer:
Answer:
z = 4.5
Step-by-step explanation:
∠B = ∠B ∠BAD = 90° - ∠B = ∠C
ΔBAD ~ ΔBCA
AB / z = BD / AB
z = AB * AB / BD = 3*3 / 2 = 4.5
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-5(x+8)-3x
simplified would be
-8x-40
Answer:
115 enjot broooooooooooo
20 Degrees
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It's too short.<span> Write at least 20 characters to explain it well.</span>
Given:
The expression is:
![2\sqrt{27}+\sqrt{12}-3\sqrt{3}-2\sqrt{12}](https://tex.z-dn.net/?f=2%5Csqrt%7B27%7D%2B%5Csqrt%7B12%7D-3%5Csqrt%7B3%7D-2%5Csqrt%7B12%7D)
To find:
The simplified form of the given expression.
Solution:
We have,
![2\sqrt{27}+\sqrt{12}-3\sqrt{3}-2\sqrt{12}](https://tex.z-dn.net/?f=2%5Csqrt%7B27%7D%2B%5Csqrt%7B12%7D-3%5Csqrt%7B3%7D-2%5Csqrt%7B12%7D)
It can be written as:
![=2\sqrt{9\times 3}+\sqrt{4\times 3}-3\sqrt{3}-2\sqrt{4\times 3}](https://tex.z-dn.net/?f=%3D2%5Csqrt%7B9%5Ctimes%203%7D%2B%5Csqrt%7B4%5Ctimes%203%7D-3%5Csqrt%7B3%7D-2%5Csqrt%7B4%5Ctimes%203%7D)
![=2(3\sqrt{3})+2\sqrt{3}-3\sqrt{3}-2(2\sqrt{3})](https://tex.z-dn.net/?f=%3D2%283%5Csqrt%7B3%7D%29%2B2%5Csqrt%7B3%7D-3%5Csqrt%7B3%7D-2%282%5Csqrt%7B3%7D%29)
![=6\sqrt{3}-\sqrt{3}-4\sqrt{3}](https://tex.z-dn.net/?f=%3D6%5Csqrt%7B3%7D-%5Csqrt%7B3%7D-4%5Csqrt%7B3%7D)
![=\sqrt{3}](https://tex.z-dn.net/?f=%3D%5Csqrt%7B3%7D)
Therefore, the correct option is A.
D I think but I'm not completely sure