Assume the distribution is normal. Use the area of the normal curve to answer the question. Round to the nearest whole percent.The mean clotting time of blood is 7.35 seconds, with a standard deviation of 0.35 seconds. What is the probability that blood clotting time will be less than 7 seconds?
A. 15%
B. 84%
C. 16%
D. 14%
Answer: C
Mathematics
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Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.What is the magnitude of an earthquake whose seismographic reading is 7.7 millimeters at a distance of 100 kilometers from its epicenter? Round the answer to the nearest tenth.
A. 3.9 B. 2.7 C. 886.5 D. 2.9
Mathematics
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality and graph the solution on the real number line.
?
?
?
A. 
B.
C.
D.
E.
Mathematics