Provide an appropriate response.Using ?ABC~?AED, find the length of DE.
A. 
B. 48
C. 15
D. 9.6
Answer: D
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Subtract. Check by adding.
A. 4586 B. 7586 C. 4562 D. 4582
Use your estimation skills to pick the most reasonable answer. Do not solve the problem.399.25 - 398.1
A. 11.5 B. 115 C. 1.15
Solve the problem.The rate of return of certain investments increases as the risk factor of the investment increases. An investment with a risk factor of 2 has a rate of return of 5.0%. An investment with a risk factor of 24 has a rate of return of 12.0%. What is the average rate of return per unit of risk?
A. 3.14% per unit risk B. 0.53% per unit risk C. 1.90% per unit risk D. 0.32% per unit risk
Express the product as a sum containing only sines or cosines.cos 
cos 
A. 
cos2 (5?)
B. 
[cos (2?) + cos (3?)]
C. 
[cos (6?) - sin (4?)]
D. 
[cos (3?) - sin (2?)]