Add or subtract.-21 + (-13)
A. 8
B. -8
C. 34
D. -34
Answer: D
Mathematics
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Find the first four terms of the binomial series for the given function.
-2/3
A. 1 + 
x + 
x2 + 
x3
B. 1 - 
x + 
x2 - 
x3
C. 1 + 
x + 
x2 + 
x3
D. 1 - 
x + 
x2 - 
x3
Mathematics
Find the derivative of y with respect to the independent variable.y = 7
A. 
7
B. 
C. 7
ln 7
D. 
7
Mathematics
Use a calculator to approximate the area of the surface generated when the given curve is revolved about the x-axis. Round to two decimal places when necessary.y = sinx on 
A. 3.94 B. 6.17 C. 16.19 D. 9.25
Mathematics
A set of data items is normally distributed with a mean of 500. Find the data item in this distribution that corresponds to the given z-score.z = 1.5, if the standard deviation is 10.
A. 550 B. 505 C. 510 D. 515
Mathematics