Add or subtract.
- 
A. 
B. 
C. 0
D. 
Answer: D
Mathematics
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Graph the inequality.
+ 
> 1
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.(-4)2 ? 80
A. -16
B. 
C. - 
D. 16
Mathematics
Solve the polynomial inequality. Express the solution using interval notation.-x(6x - 8) ? 0
A. 
B. 
C. 
? [0, ?)
D. (-?, 0] ? 
Mathematics
Find the mass of the surface S having the given mass density. S is the hemisphere x + y + z = 64, z ? 0; the density at a point P on S is equal to the distance between P and the xy-plane. Select the correct answer.
a. 64? b. 512? c. 64 d. 8?
Mathematics