Simplify.19.1 ? 5.9 + 12.3 ? 17.2
A. 2149.8
B. 4153.5
C. 5979.1
D. 324.25
Answer: D
Mathematics
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The medical records of infants delivered at Kaiser Memorial Hospital show that the infants' lengths at birth (in inches) are normally distributed with a mean of 20 and a standard deviation of 2.7. Find the probability that an infant selected at random from among those delivered at the hospital measures more than 21 in. Round your answer to four decimal places. ?
A. 
B. 
C. 
D. 
E. 
Mathematics
Multiply: 
a. 
b. 
c. 
d. 
Mathematics
Simplify.
A. -(x + 4) B. -(x - 4) C. 4x(x + 4) D. x + 4
Mathematics
Establish the identity.
- 
= cos u - sin u
What will be an ideal response?
Mathematics