Solve the equation by completing the square.a2 - 6a - 7 = 0
A. -7, 1
B. 7, -1
C. 
, - 
D. -6, -1
Answer: B
Mathematics
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Round the decimal to the given place value.28.8869 (nearest thousandth)
A. 28.897 B. 28.877 C. 28.887
Mathematics
A line contains the given points. (a) Find the slope of the line that is parallel to the line containing the given points. (b) Find the slope of the line that is perpendicular to the line containing the given points.(3, 3) and (-4, -4)
A. (a) - 
; (b) 
B. (a) -1; (b) 1
C. (a) 1; (b) -1
D. (a) 0; (b) 0
Mathematics
Use an associative law to find an equivalent expression.9(np)
A. 9(n + p) B. 9n + 9p C. (9n)p D. 9(pn)
Mathematics
Solve.A section of roller coaster track has the dimensions shown in the diagram. Find the grade of the track, which is the slope written as a percent.
A. 11.02% B. 43% C. 3% D. 38%
Mathematics