Solve the problem.An airplane flying faster than the speed of sound creates sound waves that form a cone. If ? is the vertex angle of the cone and m is the Mach number for the speed of the plane, then 
Find the Mach number to the nearest tenth if 
A. 1.7
B. 2.4
C. 1.0
D. 1.4
Answer: D
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In the following question(s), FN represents the Nth Fibonacci number.If F500 = a and F501 = b, then F504 =
A. 2a + 3b. B. a + b. C. 3a + 5b. D. a + 2b. E. none of these
Solve the problem.Find h as indicated in the figure. Round to the nearest foot.
A. 89 ft B. 84 ft C. 86 ft D. 80 ft
Write the equation in standard form for an ellipse centered at (h, k). Identify the center and the vertices.5x2 + 3y2 + 12y - 3 = 0
A. C(-2, 0); V(-2, ±
); 
+ 
= 1
B. C(-2, 0); V(±2, 
); 
+ 
= 1
C. C(0, -2); V(0, -2 ± 
); 
+ 
= 1
D. C(0, -2); V(±
, -2); 
+ 
= 1
Solve the problem.Use the mathematical model for power gain, G = log 
10, where P0 is the output power in watts and Pi is the input power in watts. Determine the power gain G, in decibels, for an amplifier with an output P0 of 19 watts and an input Pi of 1.1 watts. Round to five decimal places if necessary.
A. 12.37361 dB B. 13.37361 dB C. 12.52853 dB D. 13.20146 dB