Express the number in scientific notation.0.000315
A. 3.15 × 10-3
B. 3.15 × 104
C. 3.15 × 10-4
D. 3.15 × 10-5
Answer: C
Mathematics
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Find the indicated probability or percentage for the normally distributed variable.The mean clotting time of blood is 7.35 seconds, with a standard deviation of 
The times are approximately normally distributed. What is the probability that a randomly selected blood clotting time will be less than 7 seconds?
A. 0.363 B. 0.156 C. 0.159 D. 0.841
Mathematics
Multiply and simplify if possible.
(
+ 
)
A. 
+ 
B. 5
+ 5
C. 
D. 10
Mathematics
Use the rotated system to graph the equation.3x2 - 2
xy + y2 - 8x - 8
y = 0
A. 
B. 
C. 
D. 
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Solve the logarithmic equation algebraically. Approximate the result to three decimal places.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics