Find the probability. Round to the nearest ten-thousandth when necessary.A bag contains 6 cherry, 3 orange, and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability that you have all lemon candies.
A. 0.061
B. 1
C. 0.1212
D. 0
Answer: D
Mathematics
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Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If I0 is 10-12, then what is the intensity of a noise measured at 50 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 5 × 10-10 watt/m2 B. 1 × 10-6 watt/m2 C. 1.48 × 1014 watt/m2 D. 1 × 10-7 watt/m2
Mathematics
Use = or ? for ? to write a true sentence.
? 
A. ? B. =
Mathematics
Add and, if possible, simplify.
+ 3
A. 
B. 
C. 
D. 
Mathematics
Evaluate the expression, given x = -2, y = 3, and a = -4.
A. -12 B. -36 C. -1 D. 36
Mathematics