Translate to a proportion and solve.  What is 4% of 81? Round to the nearest hundredth if necessary.

A. 3.4
B. 34
C. 0.03
D. 340


Answer: A

Mathematics

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Tell whether the graph opens upward or downward and whether the graph is wider, narrower, or the same as f(x) = x2.f(x) = -x2 - 5

A. Downward, narrower B. Upward, narrower C. Upward, same D. Downward, same

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Graph the function.Sketch two cycles of the radio signal  (e is in volts, f in hertz, and t in seconds) for a station broadcasting with  ("95" on the AM radio dial.) Label the point on the horizontal axis which represents the end of the second cycle.

A.

B.

C.

D.

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Solve for the specified variable. Assume that all other variables are nonzero.S = ?(b2 + B2)w; for b

A. b = ±  - B2
B. b = ± 
C. b = ± 
D. b = ±  - B

Mathematics

Solve the problem.A kite is currently flying at an altitude of 18 meters above the ground. If the angle of elevation from the ground to the kite is  find the length of the kite string to the nearest meter.

A. 22 m B. 27 m C. 32 m D. 10 m

Mathematics