I hope this helps you
-6.2= b
b= -12
Step-by-step explanation:
3m is the answer.
hope it helps
183 is the answer to that
SOLUTION:
Amount added / Original amount × 100% = % increase
14 / 25 × 100 = 56%
FINAL ANSWER:
Therefore, the percentage increase in coins is 56%.
Hope this helps! :)
We have
![81-49n^4=9^2-(7n^2)^2](https://tex.z-dn.net/?f=81-49n%5E4%3D9%5E2-%287n%5E2%29%5E2)
so this is indeed a difference of squares. Factorizing would give
![81-49n^4=(9-7n^2)(9+7n^2)](https://tex.z-dn.net/?f=81-49n%5E4%3D%289-7n%5E2%29%289%2B7n%5E2%29)
making the answer D.
We can further factor the first term here and write
![9-7n^2=3^2-(\sqrt 7\,n)^2=(3-\sqrt7\,n)(3+\sqrt7\,n)](https://tex.z-dn.net/?f=9-7n%5E2%3D3%5E2-%28%5Csqrt%207%5C%2Cn%29%5E2%3D%283-%5Csqrt7%5C%2Cn%29%283%2B%5Csqrt7%5C%2Cn%29)
but that's clearly out of the scope of this question.