Solve the equation by completing the square. k2 + 16k + 64 = 0
A. {± 8}
B. {8}
C. {-8}
D. {-16}
Answer: C
Mathematics
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Solve.Find the points of intersection of the ellipse 81x2 + 49y2 = 3969 and the line 7y - 9x = 63.
A. (0, 9), (-7,0) B. (0, 7), (0, -9) C. (0, -7), (9, 0) D. (0, -9), (7, 0)
Mathematics
Write the first four elements of the sequence. 
n
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 1, 
, 
, 
D. 
, - 
, 
, - 
Mathematics
At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are normally distributed.Find the percent of times that are between 17 and 17.9 seconds.
A. 16% B. 2% C. .5% D. 13.5%
Mathematics
Solve the problem.The taxes on a convenience store are $6134. If the tax rate is $41.92 per $1000, find the assessed valuation rounded to the nearest dollar.
A. $146,368 B. $146,284 C. $146,326 D. $14,633
Mathematics