In the given problem, (a) identify the percent; (b) identify the whole; and (c) identify the part. Write "unknown" if the answer cannot be found in the problem.68 e-mails is 39% of what number of e-mails?
A. (a) 68%; (b) 39 e-mails; (c) unknown
B. (a) 68%; (b) unknown; (c) 39 e-mails
C. (a) 39%; (b) 68 e-mails; (c) unknown
D. (a) 39%; (b) unknown; (c) 68 e-mails
Answer: D
Mathematics
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Write the expression as the logarithm of a single quantity.ln (x2 - 64) - 2 ln (x + 8) - ln(x - 8)
A. ln 
B. ln [(x2 - 64) - (x + 8)2 - (x - 8)]
C. ln 
D. -ln 2
Mathematics
Find the equation of the hyperbola satisfying the given conditions.Foci: (±2
, 0); asymptotes y = ± 3x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Factor the polynomial completely using the trial and error method.7x2 + 9x - 10
A. (x - 5)(7x + 2) B. prime C. (x - 2)(7x + 5) D. (x + 2)(7x - 5)
Mathematics
Perform the indicated operation. 
÷ 10
A. 
B. 
C. 
D. 
Mathematics