Answer:0n=0
Step-by-step explanation:
-2n+9+2n=9
-9 -9
———————
-2n+2n=0
-2n -2
———————
0n=0
Answer:
129.5 seconds.
Step-by-step explanation:
C = 3.14 (450)
= 1413
1413 (.40) = 565.2
562.5 + 300 + 300
= 1165.2
1165.2 / 9
= 129.5 seconds.
Feel free to let me know if you need more help! :)
An equation is a thing you can answer e.g
3x4+5=17
while a formula is an explanation or shows you how to do the equation