Perform the indicated operation and, if possible, simplify. ? 

A.  
B.
C.  
D.  


Answer: D

Mathematics

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Solve the problem.You have 68 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side along the river, find the length and width of the plot that will maximize the area.

A. length: 34 ft, width: 34 ft B. length: 17 ft, width: 17 ft C. length: 51 ft, width: 17 ft D. length: 34 ft, width: 17 ft

Mathematics

Solve the problem.The surface area (in cm2) of a cylindrical can with height 8 cm and a radius r can be approximated by  What is the surface area when the radius is 3 cm? Round the answer to two decimal places when necessary.

A. 207.27 B. 56.52 C. 150.75 D. 471.09

Mathematics

Use the percent formula, A = PB: A is P percent of B, to solve.30% of what number is 1.8?

A. 6 B. 0.06 C. 54 D. 0.54

Mathematics

Give an appropriate answer.Given the function f(x, y, z) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures  < ?.f(x, y, z) = x + y + z ; ? = 0.12

What will be an ideal response?

Mathematics