9,240 yards = 5.25, or 5 1/4 miles.
s= 18
and,
t= 48
These values makes it correct.
Answer:
3. - 8n² -8n + 3
Step-by-step explanation:
(4n^4 - 8n +4) - (8n² + 4n^4 +1)
Firstly, open the brackets.
= 4n^4 - 8n +4 - 8n² - 4n^4 - 1
Now, group like terms.
= 4n^4 - 4n^4 - 8n² -8n - 1 + 4
4n^4 - 4n^4 cancel out with each other since one is negative and the other is positive. So we're left with - 8n² -8n - 1 + 4
= - 8n² -8n - 1 + 4
= - 8n² -8n + 3
Fabric needed: 1620 inches^2 or 135 feet^2
^2 means squared in case you didn't know.
It would be 16/7, or 2 2/7 as a mixed number. Correct me if i'm wrong :)
