Simplify the expression. Assume that variables represent nonzero numbers.(rs)9
A. 9rs
B. r10s10
C. rs9
D. r9s9
Answer: D
Mathematics
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Find the following using a calculator. Round to four decimal places.log 40
A. 1.1021 B. 3.6889 C. 4.1889 D. 1.6021
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Evaluate the appropriate geometry formula to answer the question.A plot of land is being developed for commercial use. The land is surrounded by two sets of parallel roads, forming the parallelogram shown below. What is the area of the land?
A. 586.2 yd2 B. 5892.25 yd2 C. 9470.89 yd2 D. 11,784.5 yd2
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Find the exact value of the expression.cos 20° cos 40° - sin 20° sin 40°
A. 
B. 
C. 
D. 
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