Simplify.
A. 4
B. 4
C. 4
D. 20
Answer: B
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Use the method of variation of parameters to solve the differential equation.y'' + y = sec2 x
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Solve the problem and write the answer using scientific notation.A company produced 925,000 small appliances in one year and made a profit of 
What was the profit on each appliance?
A. $1.07 × 10-1 B. $9.32 × 102 C. $1.07 D. $9.32
Provide an appropriate response.Which of the following units is a measure of capacity?
A. an hour B. a yard C. a pound D. a gallon
A canoeist rows downstream in 0.5 hours and back upstream in 3 hours. What is the rate of the current if the distance rowed is 3 miles in each direction? Give your answer to one decimal place, if required. ? __________ mph
Fill in the blank(s) with the appropriate word(s).