Find all values of ? in [0°, 360°) that satisfy the equation.cot ? = 1
A. {45°, 315°}
B. {135°, 225°}
C. {225°, 315°}
D. {45°, 225°}
Answer: D
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Find the product.(x2 + 9)2
A. x4 + 81 B. 81x4 + 18x2 + 81 C. x2 + 81 D. x4 + 18x2 + 81
A set of data items is normally distributed with a mean of 500. Find the data item in this distribution that corresponds to the given z-score.z = -3, if the standard deviation is 70.
A. 497 B. 430 C. 290 D. 710
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.x - y + z = -3x + y + z = 5x + y - z = -1
A. (3, -2, 4) B. (-2, 3, 4) C. (-2, 4, 3) D. No solution
Use synthetic division to find the quotient and the remainder.x4 + 625 is divided by x - 5
A. x3 + 5x2 + 25x + 125; remainder 0 B. x3 + 5x2 + 25x + 125; remainder 1250 C. x3 - 5x2 + 25x - 125; remainder 1250 D. x3 + 5x2 + 25x + 125; remainder 625