Solve the problem.A commuter travels to work, driving a distance d at speed r. At the end of the day, she returns home and drives the same distance 4 mph faster, at a speed r + 4. Her average speed for the round trip can be represented by the expression 
Simplify this expression.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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A. I B. II C. III D. IV
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Provide an appropriate response.With the declining-balance method, the book value of an asset should never be less than the salvage value.
A. True B. False
Mathematics
Add as indicated.(6 + 4n5 + 3n4) + (4n5 + 2n4 - 8)
A. 11n9 B. 8 + 5n5 - 2n4 C. 8n5 + 5n4 - 2 D. 10n5 + 6n4 - 5
Mathematics
Fill in the blanks. Pulley A Pulley B Diameter rpm Diameter rpm 41 cm 460 __________ cm 820 15 cm 900 72 cm __________
What will be an ideal response?
Mathematics