Answer:

Step-by-step explanation:
Area = pi*r^2
Area = pi*9^2
Area = 
We can divide 143.50 by 7. This gives us 20.5. This means that she works 20.5 hours a week or 21 hours if you round up.
Answer:
I think it's 4
Step-by-step explanation:
Answer:
She will have stretched her neck 1 time, she will have stretched her legs 2 times, and she will have stretched her arms 4 times.
Step-by-step explanation:
This is because 1/2 can only go into 2/3 once, 1/3 can go into 2/3 twice, and 1/6 can go into 2/3 four times.
Answer:
x₁ = 0
x₂ = 6
Step-by-step explanation:
9x² - 54x = 0
9x(x - 6) = 0
x(x - 6) = 0
x = 0
x - 6 = 0 → x = 6
Hope this helps! :)