Add or subtract. Simplify your answer to lowest terms.
+ 
A. 
B. 4
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Find the mass of a tetrahedron of density 
bounded by the coordinate planes and the plane 
.
A. 
B. 
C. 42
D. 
Mathematics
Find the sum without the use of a number line.-11 + (-20)
A. 31 B. -9 C. 9 D. -31
Mathematics
Solve the problem.The distance to the horizon varies directly as the square root of the height above ground level of the observer. If a person can see 6 miles from a height of 25 feet, how far can a person see from a height of 100 feet?
A. 12 mi B. 12.3 mi C. 13.2 mi D. 11 mi
Mathematics
Find the derivative.y = 7x-2 + 12x3 + 16x
A. -14x-1 + 36x2 B. -14x-3 + 36x2 C. -14x-3 + 36x2 + 16 D. -14x-1 + 36x2 + 16
Mathematics