Research done in the 1930s by the French physiologist Jean Poiseuille showed that the resistance R of a blood vessel of length l and radius r is 
, where k is a constant. Suppose a dose of the drug TPA increases r by 20%. How will this affect the resistance R? Assume that l is constant.
?
It will drop by __________%.
Fill in the blank(s) with the appropriate word(s).
80
Mathematics
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Evaluate the exponential expression.0.72
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The rectangular coordinates of a point are given. Find polar coordinates for the point.(5, 0)
A. (5, 0)
B. (-5, 0)
C. 
D. 
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Solve the problem.A particular type of pen costs 51 cents. If n represents the number of pens purchased, the formula for the cost is 
. Which is the independent variable?
A. Total cost B. Cost of each pen C. Number of pens
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?Use the Gram-Schmidt orthonormalization process to transform the basis 
for R?3 into an orthonormal basis. Use the Euclidean inner product for R?3 and use the vectors in the order in which they are shown.
?
A. ?
B. ?
C. ?
D. ?
E. ?
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