Solve the problem. Round to the nearest hundredth, if necessary.Assume that the mean length of a human pregnancy is 268 days with a standard deviation of 9 days. What percentage of human pregnancies do we expect to last no more than 279 days?
A. 58.71%
B. 88.88%
C. 88.49%
D. 89.07%
Answer: B
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Add or subtract as indicated. Simplify, if necessary.
+ 
A. - 
B. 
C. - 
D. 
Determine the function which corresponds to the given graph.
The asymptote is x = -3
A. y = log(3 - x) B. y = log(x + 3) C. y = -log(x + 3) D. y = -log(x - 3)
In Illustration src="https://sciemce.com/media/3/ppg__cognero__Section_12.5_Circles___media__3051465e-93e2-44aa-ae02-c8cf65f0a833.GIF" style="vertical-align:-1px;" varid="variable_id_field" variablename="impvar_2ba359198b5649d1806edec97" class="wirisformula" />°, ?EFC = 
and 
are secants; 
and 
are chords. Suppose ?DFC = 
°, and 
arc degrees. Find the number of arc degrees in 
.
__________ °
Fill in the blank(s) with the appropriate word(s).
Divide. Express the quotient in lowest terms.
÷ 
A. 
B. 
C. 
D. 