Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-14 + (-6)
A. -20
B. 20
C. 8
D. -8
Answer: A
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Complete the identity.
= ?
A. 0 B. -1 C. 2 D. 1
?Let x be a random variable that is normally distributed with the given mean 
and standard deviation 
. Find the probability 
data-wiris-created="true" /> using a symbolic integration utility. Round your answer to four decimal places. ? A. ?0.3085 B. ?0.2525 C. ?0.1908 D. ?0.1223 E. ?0.1695
Use the quadratic formula to find the roots of the equation. Find a decimal approximation to the nearest thousandth.x2 + 18x + 62 = 0
A. x = 13.359 B. x = 1.126, x = 16.874 C. x = -13.359, x = -4.641 D. x = -10.126
Find all relative maxima or minima.y = ln x - x
A. (1, -1), relative maximum B. (-1, -1), relative maximum C. (-1, 0), relative minimum D. (1, 0), relative minimum