Find the indicated term of the sequence.Find a21; -6, -1, 4, ...
A. -106
B. 99
C. -111
D. 94
Answer: D
Mathematics
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Find the product.(5x - 7y)2
A. 25x2 - 70xy + 49y2 B. 25x2 + 49y2 C. 5x2 + 49y2 D. 5x2 - 70xy + 49y2
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 = -3, if the standard deviation is 70.
A. 497 B. 430 C. 290 D. 710
Mathematics
Solve the given inequality (a related function is graphed).
< 0 
A. [-4, 2] B. (-4, 2) C. (-?, -4) ? (2, ?) D. (-?, -4] ? [2, ?)
Mathematics
Use the given information to find the exact value of the expression.cos ? = - 
, ? lies in quadrant III, and sin ? = 
, ? lies in quadrant II
Find cos (? + ?).
A. 
B. 
C. 
D. 
Mathematics