Identify the graph of the equation as a parabola, circle, ellipse, or hyperbola.(x - 5)2 = 25 - y2
A. Parabola
B. Hyperbola
C. Ellipse
D. Circle
Answer: D
Mathematics
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Find the exact function value.cot-1(-1)
A. 
B. 
C. - 
D. - 
Mathematics
Solve the problem. Round to the nearest hundredth, if necessary.The monthly incomes of trainees at a local mill are normally distributed with a mean of $1100 and a standard deviation $150. What percentage of trainees earn less than $900 a month?
A. 90.82% B. 40.82% C. 35.31% D. 9.18%
Mathematics
The volume of a sphere with radius r is: ___________________________
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form.-4x - 5y = -19-8x = -21 + 10y
A. (21, 51) B. (-4, 51) C. No solution D. (-4, 7)
Mathematics