By definition, the volume of a sphere is:

Where,
r: sphere radio
Substituting values we have:

Rounding the result to the nearest tenth:
Answer: the sphere's volume is:
Solve the equation using the quadratic formula
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The Quadratic formula provides the solution for
A
n
2
+
B
n
+
C
=
0
, in which A, B and C are numbers (or coefficients), as follows:
So it would be either n= -5.127 or n= 12.873
Answer:
lol
Step-by-step explanation:
Answer:
His sister is 3 years old.
Step-by-step explanation:
Micah - M
Sister - S
M = 3 + 5S
18 = 3 + 5S
15 = 5S
3 = S
His sister is 3.