Answer:
Step-by-step explanation:
circumference=πd=π×18=18π in
distance covered in 1 sec=18π×10=180π in.
distance covered in 1 min=180π×60=10800π in
distance covered in 60 min=10800π×60=648000π in=648000π÷12=54000π ft
=54000π÷3=18000π yards=18000π÷1760≈32.13 miles per hour.
3x^2y\sqrt(y)
(\sqrt() means square root
its the 2nd one
y= 40 + 25x
Hope this helps!
a
x²+6x+9=(x+3)²