Solve the problem.Ken and Kara are 30 miles apart on a calm lake paddling toward each other. Ken paddles at 5 miles per hour, while Kara paddles at 8 miles per hour. How long will it take them to meet?
A. 1
hours
B. 10 hours
C. 17 hours
D. 2
hours
Answer: D
Mathematics
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Find the area of the triangle or rectangle. Round to the nearest thousandth, if necessary.
ft
A. 4.2 sq. ft B. 0.797 sq. ft C. 0.8 sq. ft D. 1.2 sq. ft
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Find the second-order partial derivative.Find fxx when f(x, y) = x5y5 - 
x7y7 + 17x - y.
A. 4x3y5 - 6
x5y7
B. 20x4y5 - 42
x6y7
C. 20x3y5 - 42
x5y7
D. 20x3y4 - 42
x5y6
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A 6-year bond costs $15,000 and will pay a total of $2,700 in interest over its lifetime. What is its annual interest rate? Round answer to the nearest whole number. ? __________%
Fill in the blank(s) with the appropriate word(s).
Mathematics