There is a Khana Academy video that explains everything you have to do and it’s the same page that you’re on
C- Hexagonal. Basically you just double the sides of the 2d shape to find out the amount of vertices.
20 2/3 hrs or 20 hours and 40 minutes cleaning his room. There are 30 months in may, so you multiply this by 2/3 to get 20 2/3 hrs
Answer:
no solutions
Step-by-step explanation:
<span><span>The sum of a squared and b is given by

</span>7 times the sum of a squared and b is given by
</span><span>
while 4 times the sum of a squared and b is given by
</span>

Therefore, <span>7 times the sum of a squared and b minus 4 times the sum of a squared and b is given by

</span>