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Axia college Math 117 – week 8 quiz
Number 1:
Length = 30
Width = 15
Number 2:
Exact: 4 + sqrt 45, 4 – sqrt 45
Approx: 10.708, -2.708
Number 3:
2 real
Number 4:
x^2-14x+49
Number 5:
Vert: (2, 9)
Symm: x = 2
Minimum at 9
Graph C
Number 6:
One real
Number 7:
-5, 2
Number 8:
36 and 37
Number 9:
Vert: (6, -42)
Symm: x = 6
Min at -42
Graph A
Number 10:
Vert: (0, 2)
Symm: x = 0
Max at 2
Graph D
Number 11:
Y inter: (0, 1)
X inter: (-1/5, 0)
Number 12:
Vert: (0,0)
Symm: x = 0
Graph B
Number 13:
Vert: (-2, 0)
Symm: x = -2
Graph D
Number 14:
Linear
Number 15:
Vert: (-4, -5)
Symm: x = -4
Max at -5
Graph A
Number 16:
Choice A
Number 17:
Careful with the “i” notation:
1/2 - i*sqrt(35)/2, 1/2 + i*sqrt(35)/2
Number 18:
-8, -4
Number 19:
Careful with the notation
7/6+sqrt(181)/6, 7/6-sqrt(181)/6
The intercepts are (sol1, 0) and (sol2, 0) (using the solutions from above)
Number 20:
Max area = 1250
Dim = 25
Number 21:
Vert: (-1, -4)
Symm: x = -1
Min is -4
Graph B
Number 22:
Soln: sqrt(2), -sqrt(2)
X inter: (sqrt(2), 0), (-sqrt(2), 0)
Number 23:
Exact = 7/2 + sqrt(29)/2, 7/2 - sqrt(29)/2
Approx = 0.807, 6.193
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