Solve the problem.A piece of molding 150 cm long is to be cut to form a rectangular picture frame. What dimensions will enclose the largest area? Round to the nearest hundredth, if necessary.

A. 37.5 cm × 37.5 cm
B. 30 cm × 30 cm
C. 12.25 cm × 37.5 cm
D. 12.25 cm × 12.25 cm


Answer: A

Mathematics

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Solve the problem. Round your answer, if appropriate.Electrical systems are governed by Ohm's law, which states that V = IR, where V = voltage, I = current, and R = resistance. If the current in an electrical system is decreasing at a rate of 6 A/s while the voltage remains constant at 12 V, at what rate is the resistance increasing (in ?/sec) when the current is 60 A? (Do not round your answer.)

A.  ?/sec
B.  ?/sec
C.  ?/sec
D.  ?/sec

Mathematics

Answer the question.The central angle of a regular polygon is an angle with vertex at the center of the polygon.Number of sides:4568Central angle:90°72°60°45°What is the measure of the central angle of a regular polygon with 9 sides?

A. 40° B. 38° C. 48° D. 42°

Mathematics

Find the location of the indicated absolute extremum for the function.Maximum

A. No maximum B. x = 0 C. x = 3 D. x = 5

Mathematics

Find the range of the quadratic function.f(x) = (x + 5)2 + 9

A. [9, ?) B. [5, ?) C. [-5, ?) D. [-9, ?)

Mathematics