Find an equation of the hyperbola.Foci at (9, 0), (-9, 0); transverse axis with length 4
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
Mathematics
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Perform the indicated operation.
? 
A. 
B. 
C. 
D. 
Mathematics
Perform the desired operation. Write the answer in the form a + bi.(9 + 8i)(9 - 8i)
A. 81 - 64i2 B. 145 C. 81 - 64i D. 17
Mathematics
Use U = universal set = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 5, 8}, B = {2, 3, 5, 7}, and C = {1, 4, 9} to find the set.A ? C
A. {1, 2, 3, 5, 7, 9} B. {1, 2, 3, 4, 5, 8, 9} C. {4, 6, 7, 9} D. {1}
Mathematics
Factor completely.x3 + x2 - 81x - 81
A. (x + 1)(x2 - 81) B. (x + 1)(x + 81)(x - 81) C. (x + 1)(x + 9)(x - 9) D. (x - 1)(x2 + 81)
Mathematics