Find the value of d2y/dx2 at the point defined by the given value of t.x = 7 sin t, y = 7 cos t, t = 
A. 
B. -2
C. 2
D. - 
Answer: D
Mathematics
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Solve the problem.Write an iterated triple integral in the order 
for the volume of the tetrahedron cut from the first octant by the plane 
.
A. 
B. 
C. 
D. 
Mathematics
Solve for rate in the problem. Round to the nearest tenth of a percent.982 employees is % of 795 employees.
A. 0.1 B. 1.2 C. 81.0 D. 123.5
Mathematics
Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
> 0
A. x and y must be positive. B. x and y have the same sign. C. x and y have different signs. D. x and y must be negative.
Mathematics
Simplify and add or subtract wherever possible.4
+ 3
- 4
A. 4
+ 15
B. 7
+ 63
C. 75
+ 19
D. 12
Mathematics