Multiplying and Dividing Rational Expressions — Unit test Answers
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Which expression is equivalent to the following complex fraction?
A
StartFraction 3 y + 5 x Over 2 (y minus 2 x) EndFraction
B
StartFraction 2 (y minus 2 x) Over 3 y minus 5 x EndFraction
C
StartFraction 2 (y minus 2 x) (3 y minus 5 x) Over x squared y squared EndFraction
D
StartFraction x squared y squared Over 2 (y minus 2 x) (3 y minus 5 x) EndFraction
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Greg plans to purchase a bicycle. Bike A costs $270 and has an expected maintenance cost of $36 per year. Bike B costs $360 and has an expected maintenance cost of $20 per year. Which statement is true based on the average annual cost of each bike?
A
Bike A is the better choice if Greg plans on owning the bike for 5 years or 6 years.B
Bike B is the better choice if Greg plans on owning the bike for 5 years or 6 years.C
Bike A is the better choice if Greg plans on owning the bike for 5 years. Bike B is the better choice if Greg plans on owning the bike for 6 years.D
Bike B is the better choice if Greg plans on owning the bike for 5 years. Bike A is the better choice if Greg plans on owning the bike for 6 years.25
A scientist has 40 liters of a 50% acidic solution. She adds a 20% acidic solution to create a mixture that has been diluted to have 30% acidity. The graph models the percent of acidity in the final mixture. How many liters of the 20% acidic solution should be added to create the needed 30% acidity in the final mixture?
A
0.5 litersB
30 litersC
80 litersD
37 litersDid you find these answers helpful?
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