I think you're having trouble because the equation you wrote for 8a has a slight typo.
The question says that the length is 9 less than twice the width. Your equation states the length is 9 times the width minus 2. So the length actually equals 2w – 9, meaning that w(2w – 9) = 180
Hope this helps! If you're still having trouble, let me know :)
46 divided by 3 would be the equation which you can round to 16
In exponent multiplication, When the bases are the same you ADD the power so it is n^7
Answer:
IM TERRIBLE IN GEOMETRY
Step-by-step explanation: