Unit Test — Unit test Answers
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21
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Max can mow a lawn in 45 minutes. Jan takes twice as long to mow the same lawn. If they work together, the situation can be modeled by the following equation, where t is the number of minutes it would take to mow the lawn together.How long will it take Maxine and Jan to mow the lawn together?
A
30.0 minutesB
45.0 minutesC
67.5 minutesD
135.0 minutes22
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What is the difference?
A
StartFraction 2 (x + 6) Over (x + 4) (x minus 4) EndFraction
B
StartFraction negative 2 (x + 6) Over (x + 4) (x minus 4) EndFraction
C
StartFraction x minus 3 Over (x + 5) (x minus 4) EndFraction
D
StartFraction negative 2 (x minus 6) Over (x + 4) (x minus 4) EndFraction
23
Using V = lwh, what is an expression for the volume of the following prism?
A
StartFraction 4 (d minus 2) Over 3 (d minus 3)(d minus 4) EndFraction
B
StartFraction 4 d minus 8 Over 3 (d minus 4) squared EndFraction
C
StartFraction 4 Over 3 d minus 12 EndFraction
D
StartFraction 1 Over 3 d minus 3 EndFraction
24
Ted can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. When they work together, the situation can be modeled by the equation, where t is the number of hours it would take to clear the field together.How long will it take Ted and Jacob to clear the field together?
A
12 minutesB
50 minutesC
1 hour 12 minutesD
2 hours 30 minutes
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