Answer:
7
Step-by-step explanation:
7+2= 9
16-9=7
9x-72=
9÷9= 1
72÷9=8
so... x-8
10 ÷ $3 = 9 1/3
Since she can't buy 1/3 of a spinach, the greatest amount she can buy is 9.
Hope this helps!
Answer:
2/π ≈ 0.637 m/s
Step-by-step explanation:
The rate of change of area with respect to time is ...
A = πr²
dA/dt = 2πr·dr/dt
Filling in given values in the above equations, we can find r and dr/dt.
25π = πr² ⇒ r = 5
20 = 2π·5·dr/dt
dr/dt = 20/(10π) = 2/π . . . . meters per second
The radius is increasing at the rate of 2/π ≈ 0.637 meters per second.
