Answer:
D(V) = 100,48 cm³
Step-by-step explanation:
The volume of a sphere is:
V(s) = 4/3 π*r³
Where r is the radius of the sphere
If we take derivative of V respect r
D(V)/ dr = 4/3*3*π*r² ⇒ D(V)/ dr = 4*π*r² ⇒ D(V) = 4*π*r²*dr
We know:
r = 20 cm and dr = 0,02 ( at most)
Then
D(V) = 4*π*(20)²*0.02 cm³
D(V) = 32*π
D(V) = 100,48 cm³
The way this should be set up is:
9a = 3600...
So you must divide '9' on both sides, canceling out the '9', and making the 3600 to be '400'..
So the problem should look like: a = 400 <--- (Answer)
Hope it helped.. :)
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The expression below to find the total cost for this mailing is C. (10)(0.24+0.39)
Answer:
Step-by-step explanation:
class interval
- 9-19
- 20-29
- 30-39
- 40-49
Frequency
- 5
- 7
- 6
- 2
tally
- IIIII
- IIIII II
- IIIII I
- II
Note: the fifth tally marks crosses the first 4 marks
