18 ,2x18=36 hope i helped
The answer is 9(3+x)
My work is in the attached image
Answer:m<b=m<d+125 degrees
Step-by-step explanation:
Answer:
Step-by-step explanation:
a)
![\sqrt[3]{81}=\sqrt[3]{3^4}=\sqrt[3]{(3^3)(3)}=3\sqrt[3]{3}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B81%7D%3D%5Csqrt%5B3%5D%7B3%5E4%7D%3D%5Csqrt%5B3%5D%7B%283%5E3%29%283%29%7D%3D3%5Csqrt%5B3%5D%7B3%7D)
This is irrational.
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b)
![\sqrt[3]{-64}=\sqrt[3]{(-4)^3}=-4](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B-64%7D%3D%5Csqrt%5B3%5D%7B%28-4%29%5E3%7D%3D-4)
This is rational.
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Please be aware that 3 square root of 81 is not the same as cube root of 81.
![3\sqrt{81}\ne\sqrt[3]{81}](https://tex.z-dn.net/?f=3%5Csqrt%7B81%7D%5Cne%5Csqrt%5B3%5D%7B81%7D)
You can call a cube root what it is.