Solve the problem.The decibel level D of a sound is related to its intensity I by 
. If Io is 10-12, then what is the intensity of a noise measured at 63 decibels? Express your answer in scientific notation, rounding to three significant digits, if necessary.
A. 6.3 × 10-10 watt/m2
B. 5.45 × 1014 watt/m2
C. 2 × 10-6 watt/m2
D. 2 × 10-5 watt/m2
Answer: C
Mathematics
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to 
by hand.
?
A. 
B. 
C. ?
D. ?
E. ?
Mathematics
Provide the proper response.Give the definition or an example of the following word or phrase: Like radicals
What will be an ideal response?
Mathematics
Make a line graph of the data in the table.The following table shows the number of computer sales made at Computer Buy over five months. Use time on the horizontal scale for your line graph.
What will be an ideal response?
Mathematics
Find an equation of variation in which the following are true.y varies jointly as x and z, and y = 405 when x = 9 and z = 9
A. y = 
B. y = 45x
C. y = 5xz
D. y = 7xz
Mathematics