Perform the indicated operation.
A. -2
B. 4
C. 1
D. -1
Answer: D
Mathematics
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Solve the problem.Under standard conditions, molecules of a gas collide billions of times per second. If each molecule has diameter t, the average distance between collisions is given by 
where n, the volume density of the gas, is a constant. Find 
.
A. 
= - 
B. 
= - 
C. 
= 
D. 
= 
Mathematics
Solve the problem.Find two positive numbers x and y such that x + y = 96 and xy2 is maximized.
A. x = 32 and y = 64 B. x = 1 and y = 95 C. x = 24 and y = 72 D. x = 48 and y = 48
Mathematics
Solve.
x = 
- 
A. - 
B. 
C. 
D. - 
Mathematics
Perform the indicated operation. Simplify, if possible.
- 
A. 
B. 
C. 
D. 
Mathematics