Find the percentage of data items in a normal distribution that lie between the given z-scores.z = -0.9 and z = 0.9
A. 81.59%
B. 18.41%
C. 63.18%
D. 50%
Answer: C
Mathematics
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Solve the problem.The total sales made by a salesperson was $25,000 after 3 months and $68,000 after 23 months. Predict the total sales after 45 months.
A. $115,270 B. $115,300 C. $115,342 D. $115,400
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Solve the problem.Find the centroid of a hemispherical shell having outer radius 10 and inner radius 5 if the density is constant.
A. 
= 0, 
= 0, 
= 
B. 
= 0, 
= 0, 
= 
C. 
= 0, 
= 0, 
= 
D. 
= 0, 
= 0, 
= 
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Graph the inequality.
+ 
? 1
A. 
B. 
C. 
D. 
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Use the Pythagorean Theorem to find the length of the missing side.Then find the indicated trigonometric function of the given angle. Give an exact answer with a rational denominator.Find csc ?.
A. 
B. 
C. 
D. 
Mathematics