Multiply and simplify.6
(
+
)
A. 6 + 18
B. 6 + 3
C. 6 + 3
D. 18 + 18
Answer: A
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Solve the problem.What is the intensity in watt/m2 of a noise measured at 66 decibels? D = 10 log10(S/S0), where S0 is 10-12 watt/m2. Round to two decimal places when necessary.
A. 7.35 × 1014 watt/m2 B. 3.98 × 10-6 watt/m2 C. 6.6 × 10-10 watt/m2 D. 3.98 × 10-5 watt/m2
Solve the problem.Two tracking stations are on the equator 120 miles apart. A weather balloon is located on a bearing of from the western station and on a bearing of N19°W from the eastern station. How far is the balloon from the western station? Round to the nearest mile.
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A. 200 in. B. 190 in. C. 184 in. D. 194 in.