Expected Value — Cumulative exam Answers
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61
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What is the solution of Round your answer to the nearest hundredth.
A
Option
B
Option
C
Option
D
Option
62
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What is the quotient?
A
StartFraction 1 Over 2 y EnDfraction
B
StartFraction 3 y + 2 Over 6 y squared EndFraction
C
StartFraction 1 Over y EndFraction
D
StartFraction 2 (3 y + 2) Over 3 EndFraction
63
Which of the following shows the graph of y = –(2)x – 1?
A
On a coordinate plane, a curve is level at y = 0 in quadrant 2 and then decreases rapidly into quadrant 4. It crosses the y-axis at (0, negative 0.5).
B
On a coordinate plane, a curve is level at y = negative 1 in quadrant 3 and then decreases rapidly into quadrant 4. It crosses the y-axis at (0, negative 2).
C
On a coordinate plane, a curve is level at y = 1 in quadrant 3 and then decreases rapidly into quadrant 4. It crosses the y-axis at (0, 0).
D
On a coordinate plane, a curve is level at y = 0 in quadrant 2 and then decreases rapidly into quadrant 4. It crosses the y-axis at (0, negative 2).
64
Which equation is the inverse of y = 7x2 – 10?
A
y = StartFraction plus-or-minus StartRoot x + 10 EndRoot Over 7 EndFraction
B
y = plus-or-minus StartRoot StartFraction x + 10 Over 7 EndFraction EndRoot
C
x = plus-or-minus StartRoot StartFraction x Over 7 EndFraction + 10 EndRoot
D
y = StartFraction plus-or-minus StartRoot x EndRoot Over 7 EndFraction plus-or-minus StartFraction StartRoot 10 EndRoot Over 7 EndFraction
65
What are the domain and range of ?
A
domain: x > 1; range: y > 2B
domain: x > 1; range: all real numbersC
domain: all real numbers; range: y > 1D
domain: all real numbers; range: all real numbers66
What is the following simplified product? Assume
A
3 x StartRoot 6 x EndRoot + x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared + 8 x Superscript 5 Baseline StartRoot 10 x EndRoot
B
3 x StartRoot 6 x EndRoot + x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 EndRoot + 8 x Superscript 5 Baseline StartRoot 10 EndRoot
C
3 x StartRoot 6 x EndRoot minus x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 EndRoot minus 8 x Superscript 5 Baseline StartRoot 10 EndRoot
D
3 x StartRoot 6 x EndRoot minus x Superscript 4 Baseline StartRoot 30 x EndRoot + 24 x squared StartRoot 2 x EndRoot minus 8 x Superscript 5 Baseline StartRoot 10 x EndRoot
67
For the inverse variation equation xy = k, what is the constant of variation, k, when x = –2 and y = 5?
A
–10B
Negative two-fifths
C
Five-halves
D
1068
If , which inequality can be used to find the domain of f(x)?
A
StartRoot 4 x EndRoot greater-than-or-equal-to 0
B
4 x + 9 greater-than-or-equal-to 0
C
4 x greater-than-or-equal-to 0
D
StartRoot 4 x + 9 EndRoot + 2 greater-than-or-equal-to 0
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