Prove the identity.
= 1 - tan2x
What will be an ideal response?
Answers may vary. One possible solution is:
= 
= 
= 
= 1 - tan2x
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Use cross multiplication to determine whether the pair of fractions is equivalent.
A. 50 ? 18; No B. 60 = 60; Yes C. 30 = 30; Yes D. 15 ? 60; No
Provide the proper response.Write a problem that includes last year's sales, this year's sales, and asks for the percent of decrease. Explain how to identify the base, rate, and part in your problem.
What will be an ideal response?
Solve the problem. Round stock turnover to the nearest hundredth and dollar amounts to the nearest cent.A furniture store has an average inventory of 
at retail, and an average inventory of 
at cost. The cost of goods sold for the same period is $17,311.32 and sales of furniture were 
. Find (a) Stock turnover at cost, and (b) stock turnover at retail.
A. (a) 1.44, (b) 1.43 B. (a) 4.68, (b) 4.65 C. (a) 4.65, (b) 4.68 D. (a) 3.26, (b) 6.67
Given that DB ? AC and B is the midpoint of AC; prove that ?ABD ? ?CBD.
