Use the formula for 
to solve.In a contest in which 7 contestants are entered, in how many ways can the 5 distinct prizes be awarded?
A. 84
B. 2520
C. 42
D. 21
Answer: B
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (5, 1, -1) for ln 
- exy+z2 = 0.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The perimeter of a rectangle is 16 cm. One side is 4 cm longer than the other side. Find the lengths of the sides.
A. 2, 4 B. 4, 8 C. 2, 6 D. 3, 7
Mathematics
Solve the problem.Find the volume that remains after a hole of radius 1 is bored through the center of a solid sphere of radius 2. Round to the nearest tenth.
A. 6.9 B. 5.4 C. 65.3 D. 21.8
Mathematics
Decide whether or not the modulo system forms a group.{0, 1, 2, 3, 4, 5, 6, 7, 8}; addition modulo 9
A. Not a group B. Group
Mathematics