Write the fraction.According to a recent study, 10 out of 15 visits to a hospital emergency room were for an injury. What fraction of emergency room visits are NOT injury-related?
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find the area of the region specified in polar coordinates.the region enclosed by the curve r = 9 - 3 cos ?
A. 
?
B. 45?
C. 
?
D. 90?
Mathematics
Find the product.(5m2)(4m3)
A. -20m5 B. 20m5 C. 20m D. -20m
Mathematics
Factor. Assume that variables used as exponents represent positive integers.7x2n + 9xn - 10
A. (xn - 2)(7xn + 5) B. (xn - 5)(7xn + 2) C. (xn + 2)(7xn - 5) D. prime polynomial
Mathematics
Perform the indicated operation. Express the solution in scientific notation.
A. 109 B. 330 × 10-9 C. 10-9 D. 10-8
Mathematics