Find the exact values of s in the given interval that satisfy the given condition.[-2?, ?); cos2 s = 
A. - 
, - 
, 
B. - 
, - 
, - 
, - 
, 
, 
C. - 
, - 
, 
D. - 
, - , -
, -
,
, 
Answer: D
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Use a finite sum to estimate the average value of the function on the given interval by partitioning the interval and evaluating the function at the midpoints of the subintervals.f(x) = 
on 
divided into 5 subintervals
A. 
B. 
C. 
D. 
Scores in golf can be 0 (also called par), a positive integer (also called above par) or a negative integer (also called below par). Below are the scores of some members of a college golf team in a recent tournament. 
Find the average of the scores of the members shown.
A. -1 B. 0 C. 1 D. 2
Solve the system as matrix equations using inverses.x1 + x2 + x3 = -2x1 - x2 + 3x3 = 85x1 + x2 + x3 = -22
A. (5, 1, 4) B. (4, -5, -1) C. (-5, -1, 4) D. (4, -1, -5)
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.5x2 - 6xy + 5y2 - 8 = 0
A. ? = 45°
+ y'2 = 1
ellipse
center at (0, 0)
major axis is the x'-axis
vertices at (±2, 0)
B. ? = 45°
x'2 = -4y'
parabola
vertex at (0, 0)
focus at (0, -1)
C. ? = 45°
- y'2 = 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±2, 0)
D. ? = 45°
y'2 = -4x'
parabola
vertex at (0, 0)
focus at (-1, 0)