Find the length of the curve.The spiral r = 6?, 0 ? ? ? ?
A. 16((?2 + 1)3/2 - 4)
B. 6
C. 3(?
+ ln (? + 
))
D. 36
Answer: C
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Solve.The loudness, D, in decibels of a sound of intensity I is given by D = 10 log (I/I0), where I is measured in watt/m2 and I0 = 10-12 watt/m2. What is the decibel level of a noise whose intensity is 4.87 x 10-5 watt/m2? (Round to the nearest whole number.)
A. 67 decibels B. 77 decibels C. 177 decibels D. 8 decibels
Determine whether the equation is an identity, a conditional equation, or an inconsistent equation.
+ 
= - 
A. Identity B. Conditional equation C. Inconsistent equation
If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."{(11, 19), (19, 19), (-4, -8)}
A. Not one-to-one B. {(11, 19), (19, 19), (-8, -4)} C. {(19, 11), (-4, 19), (-8, 19)} D. {(19, 11), (19, 19), (-8, -4)}
Find the perimeter of the polygon.
A. 82 m B. 44 m C. 312 m D. 32 m