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. 
= - 
Answer: C
Mathematics
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A. (8x - 5y)2 B. (8x + 5y)2 C. Prime D. (5x - y)2
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Factor the polynomial completely using the trial and error method.-45y2 + 32x2 + 4xy
A. (4x - 9y)(8x - 5y) B. (8x - 5y)(4x + 9y) C. (4x + 5y)(8x - 9y) D. (4x - 5y)(8x + 9y)
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Add or subtract. Express the answer as a mixed number.
A. 6
B. 4
C. 5
D. 5
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Use a calculator to approximate the square root to three decimal places. Check to see that the approximation is reasonable.
A. 8.718 B. 8.715 C. 8.723 D. 76.000
Mathematics