Answer:
486
Step-by-step explanation:
So you would multiply 9*9 to get 81 then add it 6 times to get 486
Step-by-step explanation:
volume=8448m²
volume=l×b×h
=11m×8m×t
=88m²×t
therefore, 88m²×t=8448m²
t= 8448/88
= 96
Check:-
volume= l×b×h
=11m×8m×96
=8448m³
Our answer is correct
1$ = 100 cents, 1 hour = 60 minutes
$7.80/hour = (7.8*100) cents / (1*60)minutes
= 780 cents/60 minutes
= 13 cents/minute
<span>Option b.</span>
Answer:
Decagon
Step-by-step explanation:
We can use the general equation to determine the sum of interior angles:
![I.A. = 180 \times (n-2)](https://tex.z-dn.net/?f=I.A.%20%3D%20180%20%5Ctimes%20%28n-2%29)
Since we know the sum of interior angles (I.A.) is 1440°, we must figure out n - the number of sides and so:
![1440=180(n-2)\\\\\frac{1440}{180}=n-2\\\\8=n-2\\\\n=10](https://tex.z-dn.net/?f=1440%3D180%28n-2%29%5C%5C%5C%5C%5Cfrac%7B1440%7D%7B180%7D%3Dn-2%5C%5C%5C%5C8%3Dn-2%5C%5C%5C%5Cn%3D10)
Since n=10 this means that it is a 10 sided shape meaning it's a decagon.