Answer: No it is not.
Step-by-step explanation: A rational number is a number that can easily be expressed as a fraction or decimal, and square root of 7 cannot be easily expressed.
Answer:
b
Step-by-step explanation:
you can break the 78 into 70 and 8, and multiply them separately by 6 and then add the two answers to get 468
13. An exponent in the form of
![a^{\frac{2}{3}}](https://tex.z-dn.net/?f=a%5E%7B%5Cfrac%7B2%7D%7B3%7D%7D)
is equivalent in saying
![\sqrt[3]{a^{2}}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Ba%5E%7B2%7D%7D)
So, we can apply that to our fraction:
![(\frac{64m^{6}}{27n^{9}})^{\frac{2}{3}} = \sqrt[3]{(\frac{64m^{6}}{27n^{9}})^{2}}](https://tex.z-dn.net/?f=%28%5Cfrac%7B64m%5E%7B6%7D%7D%7B27n%5E%7B9%7D%7D%29%5E%7B%5Cfrac%7B2%7D%7B3%7D%7D%20%3D%20%5Csqrt%5B3%5D%7B%28%5Cfrac%7B64m%5E%7B6%7D%7D%7B27n%5E%7B9%7D%7D%29%5E%7B2%7D%7D)
![=\sqrt[3]{\frac{4096m^{12}}{729n^{18}}}](https://tex.z-dn.net/?f=%3D%5Csqrt%5B3%5D%7B%5Cfrac%7B4096m%5E%7B12%7D%7D%7B729n%5E%7B18%7D%7D%7D)
![=\frac{16m^{4}}{9n^{6}}}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B16m%5E%7B4%7D%7D%7B9n%5E%7B6%7D%7D%7D)
14. Using the properties from the previous question, you should be able to complete this question. If you're having troubles, let me know and I'll walk you through it.
Answer:
-3
Step-by-step explanation:
-2n+3=9
-2n=6
n=-3