The correct answer is true
Answer:
a)a^4 + 19a^2 -12ab - 3b^4 +6b...
I feel like your answer would be 9.2 cm
Answer:
C. 20 seconds
Step-by-step explanation:
We want to know when y=0
The first y is when it started and the second y=0 is when it stops
Looking at the graph y=0 at x=0 and y=0 at x=20
The fan started at time 0 and stopped at 20 seconds