Fill in the blank with one of the words or phrases listed below. 
A combination of operations on variables and numbers is called a(n) 
.
A. equation
B. evaluating the expression
C. addition
D. algebraic expression
Answer: D
Mathematics
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Calculate the expression.
Mathematics
Use a spherical coordinate integral to find the volume of the given solid.the solid bounded below by the xy-plane, on the sides by the sphere 
and above by the cone 
A. 
?
B. 
?
C. 32?
D. 16?
Mathematics
Find an equation for the ellipse described.Focus at (0, -4); vertices at (0, ±8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Solve the equation. Express radicals in simplest form.3x2 = 45
A. {22.5}
B. {-
, 
}
C. {16}
D. {-15, 15}
Mathematics